We don't know how good Wyyrlok 1 is, we've literally never seen him in a fight. The family is *very* strong in the force and the Wyyrloks were the closest of Krayt's inner circle and served as Loremaster and Voice, so we're talking mucho force knowledge too. And Wyyrlok I was the one who initially earned the family that great position.
Wyyrlok III would win, I don't know for sure on I although I'd suspect he'd have at least the edge in the force.