Stafford is up and down yearly.
Rivers, of whom I'm admittedly a fan of, just had statistically one of his worst years of his career.
You're holding a year of Luck being hurt against him. Luck was leagues above Cam last season. Luck was leagues above Cousins last season too. Luck was leagues above Winston and Mariota last season too. Carr is a debate, which I fairly admit.
He was hurt in 2015. He took his team to the AFCCG in 2014. He has never had a losing record when he plays more than half a season. He's never lost more than 7 games in a season ever.
I know you think he's "overrated" by some, so you take ridiculous stances, but Luck is better than Cam, Cousins, Winston and Mariota and every single one of those GM's would trade their guy for him barring injury status.