It's hard to say how that (this?) class of QBs will pan out. Everyone seems to have levelled off, with Rivers, Eli Manning, and Roethlisberger exhibiting hot starts and cooling off somewhat. Losman started off horribly, and he's getting to be pretty good.
Sooo.. I'm going to be a homer and say Losman is going to be best, Rivers and Manning in the middle, and Roethlisberger the worst because I dislike him. :shrug: