MTW's AI was okay, but it had far fewer variables to deal with. RTW's AI might have been a bit better, but it played far worse. In part that's probably due to the significant increase in variables the AI had to wade through, but it's also quite posible the RTW AI was just worse too.

Either way, since MTW2 is using a map at least as complex as RTW, the AI needs a huge overhaul, or utter replacement, because RTWs sucked.