I'd take Koy over Hoge all day in a pro-style passing offense, despite the size differences. Koy's feel for the game, instinct, and touch on the ball look really good in limited reps.
Just look at Browning at UW. The dude is skinny. I don't care if he can only front squat 100 lbs and only benches the bar, the guy throws a beautiful ball and makes great decisions.