If you could really get 2 teams against eachother that have good tactical movement and cooperation, then yes, I agree with you. But the occurence of that is probably 1 out of 1000. There is always someone, if not everyone who tries to play rambo going in with guns blazing, reacting even more stupidly than the AI...running, jumping, diving, rolling...dolphin diving, bunny hopping, etc... Don't get me wrong. One of my favorite games is BF2. But, I wanted something with a bit more tactic, as my first reaction to being shot at is not hopping around like a fool or running, jumping and faceplanting onto the ground.
One thing I don't like about AI is that once you start shooting at them, it is like they constantly know where you are. You can duck behind cover, run to the other end of that cover and poke your head out and they shoot you instantly. They know when you are hiding behind a tree, even if they didn't really have the chance to see you go there, a lot of times, they know where you are coming from, and if you start shooting, they instantly know which direction it is coming from. Now that...I don't like.