My friend and I played with the modded SAS brits against the computer, and we finished expert germans within 15 minutes by using almost only jeeps. Are those jeeps not a tad bit to good in a rush? Like against buildings? As soon as the opponent get's tanks, you're finished, but in the first minutes of the game, they are crazy. Maybe that is how you meant it, and you should just not play against the computer, because they are not smart enough, but I think it needs some modification.
This is with Patch 1.31