You guys are waaayyyy overvaluing Ortiz. He has one good pitch. Barely struck anyone out last year, and had issues with walks his entire career up until last season. He is a middle reliever. He doesn't have the stuff to make it as a starter, and to get an average starter at a position of need is selling High on Ortiz.
Both prospects are lefties who don't even touch 90 on the radar gun, relief pitchers at best. So they basically gave up nothing for a potential starting 1B. He has hit in the minors, doesn't have any glaring red flags from last season (good contact rate, low K's, decent power), and should only get better. Guys bloom late all of the time (ie Brent Rooker, Christian Walker). Not saying he's on their level, but no reason to think last season was a fluke