Just a few quick devil's advocate questions...
Immort said:
I gotta jump in on the side of the cleric archer here. My first 3E character ever was a paladin turned cleric archer. I ain't sayin' that +20 to damage ain't great, but ya gotta suck 20 points offa yer bab ta do it. Sure yer primary attack is gunna do just fine, as is the second one ya get with rapid shot, but by the 4th and 5th attacks, yer gunna be in real danger of missing. The cleric has +6 from divine favor, +5 from his magic arrows (GMW), and an addtional +5 from his bow (GMW again) so right there he has got +13 ta hit AND damage (assumin' the Peerless twirp has his +3 arrow ability workin') that the PA can't access.
Now it is safe to assume that by 20th level everybody will have a +5 mighty bow, and we can assume everyone has a great dex and an 18 strength, so lets break it down a bit.
20, 15, 10, 5 for the bab. -2 for the rapid shot leaves you at
18, 18, 13, 8, 3. This will be where they both begin.
Maybe I'm missing something, but since clerics max out at a BAB of 15 wouldn't the cleric's progression be 15, 10, 5, or 13, 13, 8, 3 with rapid shot? Please let me know if I'm missing something...
Assuming equal dex, both having weapon focus, equal bows, so we won't even bring those numbers into the equation.
Takin' his power attack with the bow, PA looks like this:
-2, -2, -7, -12, -17...
May I ask why you chose to take all of the BAB for Power Attack? In my experience, Power Attack is useful only for situations where you are fairly sure that you'll be hitting with only the "Other" bonuses you may have - basically on low AC creatures. In other situations, you may only feel that you need to apply, oh, say, half of your BAB (which, if I remember correctly is completely in within the strictures of a Power Attack). The new progression would then be 8,8,3,-2,-7, with an additional +10 damage.
...but we can safely assume he is doin' 8 points more per hit (as the other factors equal out, (specialization can be had if the cleric takes the aforementioned level of templar))
Very much agreed, except for the fact that you are comparing a Figher/PA 10/10 vs an Archer Cleric 20, not an Archer Cleric 19/Templar 1.
If we give both example characters a 28 dex via whatever method ya want, weapon focus, a +5 bow, bracers of archery, and point blank shot, (ain't handin' either character magic arrows cuz face it, how many people can afford to pay 50000 gp for every ten rounds of combat for +5 arrows) so we can add 18 to each bab.
PA gets up to +3 arrows right? So we will give him that. So we will add +18 to his scores.
I assume you mean 21 here, as that's what you've used in further calculations.
New progression using the figures for a different Power Attack modifier (above) give 29, 29, 24, 19, 14
If yer shootin' at a 30 ac (not a really difficult ac for a CR 20 encounter) you can really only count on 2-3 hits and that may be pushing it. So if we calculate +4 str, +3 arrow, +5 bow, +1 point blank, +2 spec, +1 bracers, +20 from power attack,
we land on +36. We'll give a high average of 5 damage per arrow for 41 points per successful hit. Averaging it out based on bab we come up with (for simplcity we skip crits):
20.5, 20.5, 10.25, 2.05, 2.05 for an average damage of 55.35.
OK - here's the disclaimer that I'm not very good with statistics, but here goes.
With the adjusted progression, you can see that even the 4th attack the Fighter/PA makes it going to hit 50% of the time (on the roll of an 11 or better). Rather than actually do the math again (which I'm not so sure I could do anyway), we'll use your convention of "% of damage based on likelyhood to hit" based on damage of 31. I come up with 29.5, 29.5, 23.25, 15.5, and 7.75. This comes out to a grand total of 105.5. The judicious use of Power Attack is the factor here.
Cleric comes up with all the same damge bonuses the PA has minus the power attack. To this he adds Divine Favor and +5 arrows stead of +3.
Actually Damage bonuses for the Cleric should be 21 (26, -10 from the Power Attack the PA did, -2 for no Specialization as above, +5 from Divine Favor, +2 from the extra arrow bonues from GMW vs the PA +3).
44, 44, 39, 34, 29. So only missing on a 1. Cleric's average damage comes out to 29 per successful hit.
OK, here's where it get's tricky - I have to rebuild where you got this # from...
All attack bonuses from magic, ability scores, and feats are the same are the same except for the cleric's additional +2 from GMW (over the PA's +3), and Divine Favor. That's an additional +7 on top of the 21 we used above, for a total of 28. However, BAB for the cleric with Rapid Shot is 13, 13, 8, 3 (as shown above). This gives a progression of 41, 41, 36, 31. Each arrow still has a 95% chance to hit.
27.55, 27.55, 27.55, 27.55, 27.55 for and average damage of 137.75.
New damage average per arrow is 26.6. Four hits = 106.4
It looks like we've got equal damage capability when the Cleric is buffed, here.
I would like to note that we did not account for crits here, and the Fighter/PA is much better suited to take advantage of the crits (in the example above, damage bonuses for the Archer Cleric become 23*3 or 69, rather than the Fighter/PA's 26*3 or 78. Considering that Fighter/PA's have the feats available to take Improved Crit without giving up any other Missles Feat makes them pretty nasty. The damage gap becomes sick if the Fighter/PA for some reason has a chance to use more BAB for his Power Attack (for example if the AC of the creature had been 20 rather than 30).
For that matter, if the Creature AC had been 40, the Fighter/ PA has the flexibility to NOT power Attack. His average damage may go down, but he is still hitting. This flexibility can pay off in the long run.
By the way, how long does Divine Favor last? That seems to be the only real edge that the cleric has in this fracas.
Add to this the fact that the cleric can heal himself several times per day, dispel magic, and do all sorts of other little goodies like flame striking and blade barrier, and fire storm. Plus all the other spells.
Hey, what can I say, clerics are cool.
As fer cover, I'm thinkin' yer gunna run from cover when ya git hit by a blade barrier. Yer in a jungle getting pelted? Firestorm 'em all and let god sort 'em out. Yer in anti-magic? Course that is gonna suck, but the truth is it tends to limit all the players that way. Yer left with yer base bab, yer feats and yer base stats. Arcane archer gets nuked, PA is lookin' abit better than the cleric but only in bab and only if he aint power attackin'. Damage is going to stay balanced cuz he can't power attack without all those other bonuses to hit. (not that he can all that well with them)
Long and the short of it is yer peerless archer is cryin to his mommy cuz he can't hang with the big dog.
-Immort
Actually, if you take a look at the math, the Fighter/PA holds in own in this little contest. By the way, if you really want to make the contest interesting, I suggest you trick out an Archer Cleric and Stat block him. Then do the same with a really tricked out Fighter/PA. Then try this little contest. The only reason I say this is because your Cleric already seems pretty tricked out, but the Fighter/PA seems like it's not, really.
And I'm spent...