It's funny how often this comparison gets made, when the situations are so completely different. The only thing they have in common is that they both have great stuff and both stunk in April.
Perez is hurt. Perez has problems with his mechanics. Perez can't throw strikes. This is not a recipe for a turnaround, but the payoff is too high on this guy. There is a slim chance he could resemble the pitcher of last year, and for that reason alone, he is stashed on my bench. Unless you're ultra-confident he won't turn it around, you don't want to be the guy that dropped Santana last year (sorry ocmusicjunkie; you are applauded for admitting your mistake though. I made some bad ones last year too: dropping Brian Roberts, Mark Loretta, Hideki Matsui in a keeper league).