Bit of a homer because I drafted the guy in almost every league, but I'd play Fitz because of his inevitable shootout with Brady. This is the same D that let Chad Henne go buckwild, and BUF has 3 quality receivers in Stevie, Nelson and Chandler to go with 2 very capable receiving backs. He'll get his yards, he'll get his points.
Ryan on the other hand will do what he does, 200+ yards, a couple touches, maybe a pick or two. Very unsexy.
Swing for the fences, take the Harvard grad