I think you're right about the frame of the argument. As for chances of which pitcher does what: Arroyo's only one season removed from being a good pitcher and Bailey turns 26 in a few weeks. The conclusion that Arroyo's arm suddenly went poof never to return seems more than a bit hasty to me. I'd think everyone could agree that if Arroyo has something left in his arm, he knows how to make it work out on the mound. Meanwhile Bailey isn't a kid anymore. He should be well past his take-your-lumps phase. While some guys take longer to figure it out, it does not bode well that he's begun to have health issues creep into the mix. His stuff is even kind of meh right now. Add that his head/heart/health question marks and it's no small number of things he needs to overcome.