Is he, though? I mean, isn't that part of the issue/question? This is Cam in his last four seasons (The last is just 2 games, but it's all we have to go on from last year):
Cam Newton Stats | Pro-Football-Reference.com
I think he's a legitimate NFL starter, but one can reasonably question whether or not he's been a starter-level NFL QB during
most of that stretch. Also, nine seasons played (full or in part), but only two of those with a QB rating above 90, only one of those with a better than 2:1 TD:INT ratio, and only three seasons with a completion percentage at 60% or better.
Is Cam healthy? If so, can he be an actual QB, or is he just a big strong runner who can throw the ball a little? That's what people will be asking.