Now these are still early impressions. I'm planning a WHRP game at the moment and I'm really curious to see how that goes. I'll post further impressions after I run a few sessions.
(Oh btw- I planned on running a Earthdawn game from my buddy but switched at the last minute and wrote up a Dragon Age adventure on the spot. I scribbled down some notes, wrote down the adversaries stats and ran the game. I don't think I'd be able to do the same for Warhammer.)