Manning vs. Tebow isn't even a debate. Manning is the better QB. It's dumb to suggest otherwise. Sure I've been delighting in the fact that Tebow has won more playoff games as Broncos QB than Manning but that's because I love-hate Manning.
However, I think Sanchez vs. Tebow has more merits and really highlights the impact of Fantasy Football on how a fan perceives talent in this game. A lot of fans today scoff at the idea of being clutch or 'just wins games' and point to stats that back them up.
Old fags like me still believe in those nebulous concepts and I think Tebow is unquestionably a guy who has a knack for leading a team and he has some sort of will to win that a guy like Sanchez, for all of his superior skills, cannot match.