James Gasik
We don't talk about Pun-Pun
Isn't an extra attack every 2.5 combats equal to Action Surge?The answer to that question is 1 out of every 20 attacks. Combats in my experience typically last 3-5 rounds, so I've been calling them at 4 rounds. That's one miss turned into a hit every 5 combats until you reach extra attack. Then it's one miss turned into a hit every 2.5 combats. This is a really low amount of damage added. Then you have say 11 other hits that are all getting +1 damage, but those hits are also spread out over those combats, which also amounts to next to no extra damage per fight.
When you're in a fight with a group of PCs all doing damage against a group of enemies, that 2 extra damage a fight and one extra hit every 2.5 to 5 fights just isn't going to be noticeable.
Fights don't happen in aggregate, though. They happen individually. So yes, over 20 levels you are looking at hundreds of extra points of damage, and that was all in a fight or two the fighter would be kicking some serious ass. However, each individual fight isn't even going to notice the minute amounts of extra damage being inflicted. So while the aggregate damage over time and the percentage increase both seem very impressive, the reality is that the damage increase is trivial. It just doesn't affect things more than once in a blue moon.