Are we using W/L as solely a QB stat and ignoring that Derek Carr never had 3 All-Pro offensives linemen and a 2 time rushing title winner? Derek Carr has had a 1,000 yard RB TWICE in his career.
Derek Carr, just this year, did something that Dak has never done. That's lead a team to the playoffs without a 1,000 yard RB.
Did you see what the Raiders went through this season with Gruden, Ruggs, and so on? Dak struggles when things aren't perfect while Carr seems to thrive in it.
Carr's stock went up a lot this season, hence the contract, while Dak's stock went down.