That change, however, is crucial...because the rule goes on to say: "If a creature is providing cover for another character and the attack roll exceeds the AC of the covering creature, the covering creature takes the damage intended for the target."
That's interesting. So, if you are throwing a javelin into melee where your buddy Frank (AC 16) is fighting an Orc (AC 12), and you roll a total of 21 on your attack throw, the rule is saying, even though you've got a perfectly good hit there, that you will hit Frank and not the Orc.
Hm...
That makes it much harder to hit in melee than my original rule (if you figure the PCs are usually going to have better AC's than the bad guys).
In the example above, the Orc is hit on throw of 16+. Frank is hit on a throw of 20+.
This means that very high attack throws will hit Frank. That's counterintuitive. Higher attack throws should be more accurate. The Orc is only hit on a roll of 16-19. Frank is hit on any roll 20+.
If I'm reading that right.
EDIT: And, if I am reading that rule correctly, it's not a very well thought out rule (that second part about the covering creature).
What if Frank (AC 15) is fighting an Orc that is AC 14?
The attack misses on a 1-17. Hits the Orc on roll of 18 only. Hits Frank on a roll of 19+.
That's only a 5% chance of hitting the Orc.
There's something screwy there....
2nd EDIT: The rule basically says that, if throwing a javelin into melee, you take the AC of each creature in the melee and have the javelin hit the highest AC that the attack roll can.
So, if Frank (AC 15), an Orc (AC 14) and an evil Cleric (AC 12) are all in a fight together, the Cleric and the Orc fighting your buddy Frank. Then, you throw your javelin and roll a 22 total, you hit Frank.
You will miss all three on a roll of 1-15. You will hit the Cleric on a roll of 16-17. You will hit the Orc on a roll of 18. And, you will hit your buddy Frank on a roll of 19+.
That's not real fair to Frank, is it. And, the more skilled you are (the more bonuses you have), the more likely it is that you'll hit Frank--which is completely backwards.