Cheiromancer
Adventurer
Hypersmurf said:Isn't the burst better in cases where a monster has DR or immunity to critical hits, though?
-Hyp.
Hmmm. Bursts do normal damage even against undead and constructs, don't they? I can't remember where it says that, but your question wouldn't make sense unless that were the case.
Suppose a fighter 9 attacks a Cloud Giant Skeleton (AC 13, DR 5/bludgeoning) with a +2 flaming longspear wielded two-handed. The fighter has a 22 Strength (16 base, +2 level up, +4 belt) and Improved Critical but no weapon focus feats. He power attacks for 5 so he misses only on a 1 (BAB 9 + 6 strength + 2 enhancement - 5 = +12 vs AC 13) and does (1d8 + 9 strength + 10 PA + 2 enhancement + 1d6 fire = 1d8 + 21 +1d6 fire = 29 points). Oh, DR counts, so it is only 1d8 + 16 + 1d6 fire = 24 points. Times 95% is 22.8 damage.
With a +1 flaming burst longspear he'll use one less point of power attack, so the damage from non-crits (attack rolls of 2 to 18) will be (1d8 + 14 + 1d6 = 22). (I subtracted the DR this time) He misses on a 1. On a roll of 19-20 there will be a critical (average damage 1d8 + 14 + 1d6 + 2d10 = 33 ) 95% of the time; the other 5% of the time the critical won't be confirmed at the damage will only be 22.
So 0.85 x 22 + 0.10 x (0.95 x 33 + 0.05 x 22) = 18.7 + 0.10 x (31.35 + 1.1) = 18.7 + 3.245 = 21.945
So nope. Against a crit-immune creature with DR, the +2 flaming longspear is still better.
There is probably some case where flaming burst is better, but not in this case.
Unless I've screwed up the math somehow?