You do realize that Joe played in playoff games BEFORE 2012 correct? Go back and look at some of his earlier one's. Go back and look at what he did in his rookie season playoff performances (well below average by any possible standard). He gets credit for 2 wins that year. I don't even care if you look at the stats... just watch the games. He's as forgettable as anybody on the field in those games.
Go look at his first playoff game in the 09 season in Foxboro, when the Ravens beat the Patriots 33-14. Go look at what Joe did in that game. Literally nobody on this planet could argue he positively contributed to that victory. Again... given credit for a win for that.
For 30% of Joe Flacco's postseason victories, AT BEST, you could argue he was a replacement level QB, meaning there were many, many backups in the league that could have done exactly what he did and had the exact same outcome.
Now, since about late 2010, he's been great in the postseason. No debating that. But he hasn't always been great in the postseason. There's just no evidence to support that. Last five years... absolutely. One of the best postseason QBs probably in history in the last five years.
And yes, Tebow is a "winner", because everywhere he plays, his team wins. He won a ton in college, and he won a large amount of the games he started in the NFL. But at least you made my point for me... "winning" doesn't get you a second contract. Production does. NFL teams don't pay for winners. If they did, they wouldn't hand out $15M a year contracts to DTs and pass rushers who have never won anything. They do that annually.
How many wins does Tebow have as a starter? About 8 or 9? Calling someone like that a "winner" is a complete joke. Even when Flacco was a rookie, he led the team on a game winning drive, on the road, against one of the best defenses in the league and the top seed in the AFC. He wasn't great early in his career in the postseason, but he knew how to finish games and WIN. The Ravens certainly weren't winning in the postseason without him, and since entering his prime, he has been consistently great in the postseason. Tebow and Mark Sanchez won in the postseason early in their careers, but they have never done it consistently or without a great defense. Players absolutely do get paid to win consistently. Otherwise, Flacco would not be making well over $20mil/year.