Some people get too caught up with the guys that rise fast(Zimmerman, Straaburg) n expect that to be the norm. It's not. He's only 22.
Had he gone to college, he'd be where ... ? Potomac right now? This would be his 1st full minor league season. Instead, he's holding his own at AAA.
I don't think he's ever going to be a superstar, but he's still got plenty of time to become a solid 1st baseman.