Always has been. Always will be.
End of discussion.
Before the 2007 season, when the Patriots had just acquired Randy Moss, some numbskull from another blog said, "I never want to hear how great Tom Brady is if he doesn't throw 50 touchdowns this season."
It was completely unreasonable, but Brady did it.
The bodies of work speak for themselves, and all the evidence has been presented.
In the discussion of greatest quarterbacks of all time, let's never hear "Peyton Manning" in the same breath as "Tom Brady" or "Joe Montana."