Kurt Warner has two super bowl appearances, a championship, a league MVP, a Super Bowl MVP and a dozen other awards and records.
Warren Moon was one of the most prolific passers in league history. Probably could have won a championship if he wasn't stuck on some sh-tty teams.
Jake Delhomme Les the Panthers to their first Super Bowl and probably would have been named MVP had we won it (which we damn near did).
Other examples of great undrafted quarterbacks are guys like Jim Hart, Mike Tomczak and Eric Kramer.
Oh, and there's also this guy who was drafted in the sixth round who turned out to be better than the other guy on his team that would drafted Number 1 overall.
Draft position isn't such a big deal as you think.
Your list wasn't better, it was cherry-picked and proven to have some short-lived successes there.
The most important list is "who would be available" and quite a few of those losers will be. The winners won't.
Right now the odds are better than a replacement coach will be much worse than RR. Right now, he's coaching his butt off and getting wins from a team half-made up of second stringers and even a third stringer or two as starters. That kind of coach doesn't just appear out of nowhere like Bagger Vance rolling in from the mists of Augusta.
Here's that mic you dropped, you might want to use both hands, it's a bit bigger than you're used to.