i would hav to say the hardest factions to play as on mtw is poland, sicily and germany. on vi i would say the picts, the welsh and the irish, as there units are not so gd but hav there purposes

on rtw i would hav to say the carths as even though they hav decent units but there starting point is bad as u hav territory in spain which causes problem if u want to expand in spain. also the fact that the numadians also want a piece of u.