We're talking shortstops here. If Rojas is a great defender and can get on base at a fairly high clip, while Cozart's defense is not as good as advertised and his bat doesn't develop all that well, then you have a scenario where Rojas may be the more valuable player.Age doesn't matter in this case. Rojas doesn't have the frame that is going to fill out and give him power at all. He might hit 5 HR in a season one day. Might. The upside just isn't there on the offensive side of things. His defense is a little better right now. His offense isn't close to being better right now and it won't be in the future either. It seems pretty wacky to me.
The future is often quite different than any of us suspect it will be.