How does average at best win MVP of the league? He's obviously better than average.
It was a function of the weak schedule, the excellent surrounding cast on "O" and "D"... he can make the big throw, 30 yard laser beams... impressive, but is not a good passer overall, inaccurate, poor touch a lot of the time.
He would have struggled on many teams that 1) played a tough schedule 2) did not have a good OL & running game and 3) did not have a good "D" to get him the ball.
The eye test... he missed SO many open receivers in the Super Bowl, if he had hit a few that would have almost certainly given the Panthers the victory... that most NFL QB's would have hit. This happened all year but was hidden because of the overall success of his surrounding cast.
Leadership... no way of knowing but I wonder if some of his teammates think he is a "leader", though the press says so.