I didn't feel like Kiper was over the top last year. At worst, he stated kind of the obvious. Guys sub 6' in the third round or later have no track record of success. Really regardless of size, getting drafted that late or later is extremely difficult to project them being a starter, much less a franchise QB.
I did however love hearing Gruden's passionate diatribe on Kiper's lack of faith in Wilson. Honestly, I saw it as the difference between a guy who looks at the draft like a cattle call -- a football outsider with no regard to developing a player, and a coach who appreciates the non 'on tape' quality of a prospect and a guy who has intimate knowledge of the realities of turning prospects into players. It was a perfect illustration of the difference in depth that both men bring to the discussion.
Kiper really only has a superficial understanding of prospects and a shallow, but broad understanding of key elements of the draft process. Overall, I think he hits more than he misses and hits more than most amateurs do. But he falls into the classic trap of thinking he knows more than he does. He doesn't understand or recognize the process of turning those guys into pros and he doesn't have the ability to see how guys fit into a team's schemes.