Bah, Funked's right. Look at WW2OL -- what's the ratio of ground troops to tanks to aircraft in operation at any given time? How does that compare to RL? How often do you have _organized_ engagements of at least an infantry company on each side? What kind of logistics are there in WW2OL? Do you have enough people manning the repair depots, ammo dumps, POL facilities?
Basically, a "realistic modern battlefield simulation" involves a lot of people doing boring stuff. AI needs to be applied to take care of the boring stuff. Criticizing AH for having AI supply convoys is dumb.