That happens. Look at Trent Dilfer. Generally considered to be the worst QB to ever win a SB. Even he admits his talents were limited. And he spent most of his career as a backup.
And the Steelers were a mess when they went up against Tebow. They had a 12-4 record but they also had a ton of injuries, and got more. By the time Tebow got his game winning TD he was up against 3rd stringers and practice squad. Kind of like in the pre-season.
He won’t play in the NFL because he lacks the basic skills. In the 60s and 70s it was a run first game. Now it’s not only a pass first game, it’s a timing game. A QB needs to read the defense before the snap, know where he’s going to throw, and have that ball out of his hand 2.5 seconds after snap. Terry Bradshaw couldn’t cut it in today’s league. And the problem with adjusting the system is the other team has coaches too. He got his wins early when nobody knew what to expect, once the other teams figured out what was going to happen he had a 3 game losing streak. His history is similar to the history of the Wildcat, very successful at first, until teams had enough tape, and now both are out of the game. Gadget plays are nice, but players that are only useful in gadgets don’t last. Players need core skills, and he doesn’t have them.
The NFL’s revenue was up 20% last year. They seem to be doing just fine without Tebow.
The Steelers were nine point favorites. Like I said, when it comes to Tebow, you only see and admit the negative.