I have not played this game but will try and state my reason why this could be possiable as I take it the AI are not easy.
This is quite possiable in any oldish game. As the AI was not very good, they gave them exceptional abilities of aim and stuff. However it meant they were as dumb or dumber than a fly. Basically they would fall for the same death everytime if you find a way to abuse their AI.
Modern AI tends to not have much advantage over human players as far as aim and sight goes. However they think a lot more human like and respond more human like in combat and thus is a lot harder as they constantly change their stratergies or use what they have more effectivly.
A good example of this is the old statergy game Empire Earth. The AI had an infinate advantage over humans as they had infinates recource and at hard difficulty a combat bonous. However they were still completly beatable even if outnumbered as they kept falling for the same defencive stratergies and made no attempt to change their stratergy to counter it, even if they were producing the most insanly powerful units possiable.
Modern AI like Supreme commander's does not cheat (unless you choose that special AI from the expansion that is an extra hard difficulty). However it seems even more insanly hard to beat as it does everything simlarly to humans. It can still be outsmarted thou but it is far from as easy as it used to be.
