Kind of like Scott Frost, whos now the Ducks offensive coordinator, and was the same kind of QB back at Nebraska.
At least that's my memory of him, whether or not its accurate.
No, Tui was nothing like Scott Frost who didn't throw for more than 100 yards a game in college. Tui was a much better passer and didn't have near the production running Frost did (he prob went for 1k or more rushing his SR season when he scored a million TD's and Nebraska split the National Championship).
The closest comparison you'd get to someone around the Oregon program would be Jeremiah Masoli minus the felonies. Tui was light years ahead as a passer, but they had similar skills when running the ball and while Tui probably has a couple of inches on him, they were built similarly.