Does he have a legitimate shot at MVP or DPOY? No.
Based on team play with him on the court compared to him off the court, could you make a case for both? Absolutely.
We all know Lebron or Durant are fighting it out for MVP with a few other darkhorses in the mix.
DPOY will probably go to T. Chandler, Ibaka, or perhaps Duncan with a few other darkhorses as well.
Because Garnett plays such limited minutes though his production doesn't pop off the stat sheet and he won't even be in the conversation.