I commend him on losing all the weight, he looks to be in great shape for running up and down the court, he doesn't exactly look all that muscular though.
It has been my experience that big ol' boys, if they are strong to begin with, then really get in shape, they do not lose any of their power/strength. They just hone it, define it, and even add more. Plus, he's not trying to move around that 35 pounds that's not there anymore.
Samson Johnson, in this picture look at his shoulders and his arms, they are seriously big, Eric is a powerful dude. Plus having all this new core strength which really positively affects everything. It's gonna translate to the court, hope it translates to defense. With this mojo he's got going in his head and his new basketball body, if he has tightened up his game some, he must have a real good shot at starting at the 4.