And of course there is always a back up excuse sitting in his pocket. TA&M also put up a lot of points on those teams they were playing. So their D wasn't as good also. You make it seem like there was a bunch of 10-9 final scores in the SEC. Manziel went 16 of 41 against LSU, that had nothing to do with the defense and LSU only scored 34 points. That's low scoring in college.
As for quickness, of course he appears quicker. He's just 5'11. Just better displacement. For example, Usain Bolt being 6'4 rarely start early with a lead since he's normally the tallest of the runners. I don't know why people keep trying to differentiate quickness and speed. They're the same. It's the same stored energy(Kinetic energy) that propels an object into motion. If you're fast you're also quick. Manziel just played against a bunch of overzealous college kids who took bad angles and that OL interrupting their angle, thus Manziel took advantage of those gaps. Those gaps will not exist in the NFL. Why? Because the book is already written on Cam, RG3, and Vick.
God you really do know nothing about football do you?