Ok, lets put this clearly our options
1. Player X @4 turns into an All-Pro/major player which outside of QB's they usually do
2. Tua who's major injury now limits his mechanics significantly and is never the same QB.
3 . Tua taken @4, who is too short and now mobility challenged get hands in the face every play...accuracy sucks, arms is average, and his hip is a problem with mechanics.
4. Tua is taken @4 hobbles around and gets injured again (never made it through a season)
Which would you rather have? regardless of position.
Odds are against the kid....I actually don't like to be honest, but I suspect he will never be the player people hoped he would be.
I'll risk a 2nd or 3rd....but not a first.