Cam Newton is a damn good NFL QB, but this year, he hasn't done shite against good competition. It's not saying much if he dominates teams like Kansas City and Philadelphia, those teams are terrible.
Cam doesn't work on the mental part of the game DURING the game. Look at the elite QBs. Brady, Brees, Manning, etc.
Score a TD? Look at game film. Throw an INT? Game film. Beat a team 45-0? Game film.
Cam: Score a TD? Smile and dance on the sideline. Throw an INT? Towel over head. 3 and out? Towel. Defense gives up 30 points? Towel.