A lot with very little is debatable IMO. Two factors in Luck's favor: 1. in his two years, his division has been probably the worst in the NFL (I know Houston was good in 2012, but other than that); and he had a solid #1 WR as a rookie.
I actually would not trade Bradford for anyone on that list, because IMO, Bradford can still end up being better than all of them.
Also, I was at the Indy game when we destroyed them this year....that game (as well as a few others) is enough for me to say Luck is just as inconsistent as Bradford is/was