I've only lost one battle in the few H/VH campaigns I've played part of, so far. I only lost that because I didn't bother reinforcing one of my border armies after a large battle. That in itself says a lot about the challenge of the game; I did not feel the need to reinforce.

The A.I in MTW2 is smarter, but it's still painfully easy to beat for an experienced player. Unless you seriously handicap yourself, the battles really arn't challenging, and it doesn't take long for boredom to set in (for me anyway).

I've stopped playing MTW2 already. Not finding any fun or challenge even in 2v1 custom battles, or the campaign, so I'm waiting for the patch. If the patch doesn't fix it then I won't play it again and hopefully Rome Total Realism 7.0 will fill the gaming gap (if they release it before I forget about it....)