Don't know what planet you guys flew in from, but here on Earth, men that stand 6'6" and weigh in at over 330 pounds are by no means consider anything but humongous. Remember a guy named Darryl Gardner? Same size. Yes, different muscle structure, but will still empty a pool with a good cannonball.
As for the nose tackle thing. He is plenty big for NT. Speaking from first hand experience, there are two kinds of nose tackles. 1) Strong, quick and a little on the small size and used to gain quick penetration (i.e. John Randle)...or 2) HUUUUUUUGE mass of flesh to clog up middle...only talent needed is stay low and don't lose your ground (i.e. Keith Traylor/Pat Washington). I think that Wright has the TOOLS to become a hybrid of both, but for now Saban is just hoping he can plop that huge pile of flesh in the middle and scare the poor kid into not losing the sumo contest.