No QB is better than him? Let's take a look and see:
Tim Tebow - 47.9%, 75.3 QBR
Ryan Fitzpatrick - 59.8%, 77.5 QBR
Case Keenum - 54.2%, 78.2 QBR
I don't know about you but I would say a QB who completes more than 50% of his passes is better than one who completes 48%.