If I was a team I would look at Michael Vick and see the same thing in Mariota. I would be afraid of Mariota's durability in the NFL. Someone that plays at 210lbs will get destroyed by an NFL LBer.
Mariota is NOTHING like Vick. Have you even seen him play? He's already a better passer then Vick has ever been and he's only 19 years old! Being that he's only 19 and the son of a rather large Samoan, I'm guessing he wont stay 210 pounds for very long. Also, Mariota knows how to slide and get out of bounds.