Also too what folks are conveniently leaving out is - Brock has greatly improved his arm strength, mechanics, and footwork since he has been at Iowa State. The biggest 'leaps' in his entire post-high school career came in the 3 - 8 months immediately after leaving Iowa, and he continues to get better and better. He's also stronger and faster/quicker than he's ever been.
Huge credit goes to Brock for the dedication and time and hard work he's put in (post-college) to improve his skills, his foundation, the way he approaches the game mentally, etc.
And none of that discredits what he did at Iowa State, although I am sure some will take offense for some reason.