hehe,
i actually was talking about the model of units

buildings can have a much higer poly count because of the fact that mostly you have not more then 4 of most buildings..
(it varies i know

)
but dont want to be a bitch but almost all of the models from infantry are around 190 poly's. :P
Ofcourse the Engine can support a much higher polycount, same with unreal 2003, or quake 3, but dont forget that the same video card has to run your mod. Ie most computer have some trouble with Generals running slowly, cause most people have mediocre pc's..