I just don't get it!

Is it just me because i feel Jerry Manuel is making a very bad decision in really making a push for Top Pitching Prospect Jenrry Mejia to make the bullpen. Mejia who has been a starter his whole career is being pushed; why because he throws 95 and having a good spring? I just don't get the idea of rushing a 20 year old star in the making. I can't even think of another starter in the Mets system that even compares to Mejia so why convert your best starting pitching prospect to being the setup man for one of the best closers in baseball; in one of the biggest stages; New York!
I actually really feel that this has the chance to turn out the way the Joba Chamberlain situation turned out. A top starting pitching prospect that throws mid 90's, so converted to being a setup man. Joe Giraridi later feels he should be a starter, so he converts him to the rotation and later gets roughed up. Now after being a phenom finds himself in a crowded Yankees bullpen and not being noticed. That is what i definitely see happening, i am just hoping Manuel decided Kiko Calero is better suited to head up North on April 4th.