Seeing I have both I am hoping they both have big seasons. But as far as analysis, I have more faith in Eaton.
Eaton - 2 years remove from surgery, may become that semi-ace people have been waiting for. 13-15 wins, 3.85 era, 150 k
Affeldt - has the better stuff, but still unproven. 10-12 wins, 3.25 era, 170 k. big potential, bigger risk.
either one is better than burnett who may be out through June