You mentioned succesful QB's close to the same height as T T earlier, then a couple of post later you suggested the right coaching and system may have played a part in the success.
Good coaching/systems always plays a big part in the success of an NFL QB, as does supporting cast in my humble opinion.
Taylor has operated a run 1st Bills O with the lowest amount of passing reps in the league.
Tyrod Taylor did what the G Roman O was designed to do, which is run the football.
Best in the league...