I don't think it marginalizes him, Vick with a brain and an accurate arm would have been a first ballot HOF and in the conversation for greatest quarterback ever. Those two deficiencies in Vick are what I like about Griffen- he's a track star who can run with the best of them, but he also graduate early and went a head and finished his first year of law school while a starting QB in the Big 12, and he's already one of the more accurate passers in the league.
OK, I see where you're coming from. I think most people assume when you compare him to Vick that he's a run first, pass second qb when nothing could be further from the truth. I also made that assumption which it turns out would be false. The sky is the limit for Griffin.