The same amount of planes and GVs you'll find in a busy tank town is the same amount of planes and GVs you'll find in a mission in Wings of Prey. Aces High might have 300+ players at the same time, but it would be impossible for anyone's PC to draw ALL 300 players at the same time. It only draws whatever is within your view, which is usually around 10, sometimes extending into 30 or 40 in a very populated area. The same amount of planes are in almost every mission in WoP. Here http://www.youtube.com/watch?v=M7i75nsLlKY, one of the first missions involves a formations of He-111s, there's at least 30 planes in the area. I can play through that with no lag, yet in AH, in that same situation, if I even dare to turn on self shadows/shadows on others (4096), then it turns into a stutter fest.
Wait. So, all of these planes and GVs in a mission in Wings of Prey are individual players? Or are you still talking about AI?
Not optimize means use a crap ton of resources more than what is needed. Optimized means it looks good and runs great at the same time. Fallout, Mass Effect, Battlefield 3, Dirt 2 are all perfect examples. They all look great but don't require a monster machine to run them. Aces High is using the same engine from 2000, no way is it going to keep up with these newer technology.
So, you do in fact have no idea what you are talking about. Use a "crap ton" of "resources"... absolutely awesome. This is all just because AH's code is "not optimized".
We haven't even BEGUN to get into the economic tenability of moving beyond DirectX9 for AH.
And you, once again, list out a string of single-player or intensively small scale mulitplayer games as your examples. Now, go and look at the MINIMUM requirements for Fallout, let alone BF3.
There is so staggering a difference between what you are comparing here that it's simply impossible for me to begin to address the many misconceptions you have. Go find a game that allows, in a SEAMLESS arena, regardless of the average number of human players in close proximity, the numbers that AH does and we can start an apples to apples comparison there. What you are throwing out there are absurdly invalid as competition for AH.
And stop attributing your blatant lack of comprehensive multiplayer game engineering knowledge on people being HTC fanboy simpletons, it's bush league.