Rogers, Mahomes and Brady all won on expense contracts. Everyone says Brady was a team friendly deal, need to actually read the contract then tell me how team friendly it was. Same with Bradshaw and Montana and Steve Young and Peyton Manning and Eli Manning, eventhough the money was different then it was way more than their teammates were making.
You win when you have a good team in all phases of the game along with a bit of luck, i.e. the Purdy throw off the Lion DB facemask into #11 hands at the 4 yd line.