[Colofornian]

It's really not complicated. The Bronco defense was out for blood all game long. They tattood Cam Newton repeatedly and stuffed the Panthers completely.... (Nachum, post #4)

Cam Newton ran his mouth to much and Von Miller decided to try and kill him. (The Toll, post #17)

& 'Twasn't only Cam's mouth...but Cam electing to perform 'Dab' TD dances on too many mere first downs in .

"For two weeks, all we heard was Cam this, Cam that, Dab this, Dab that," said Denver cornerback Chris Harris, Jr., referring to Newton's trademark celebratory touchdown dance.
Von Miller, Broncos' dynamic defense too much for Panthers in Super Bowl 50

Cam himself motivated the Broncos!

Oh, & how ironic...In 4th qtr, a Panther was called for an unsportsmanlike conduct penalty vs. Immanuel Sanders when Sanders tried to signal first down after a catch. The Panther first knocked the ball out of Sanders' hands as he began his signal, & then straight-armed Sanders.

(So the 'Dab-man' can dabble in dab-dances, but other offensive players can't give a less showier expression?)

[griswold3]

Exactly!
Cam looked really tired in the 4th quarter. Hasn’t had to pick himself up so much the entire year (looked like clean hits to me, too.)

[Zman516]

After the game, Wade Phillips tweeted the perfect pearl of wisdom:

“A little Dab will do you but too much Dab will undo you!”

As far as play choice, it may be that the Panthers passed more trying to pick on the two Bronco safeties and cornerback Chris Harris who were not really at 100%.