Saints and Carr deal released $150M over 4 years $100M fully guaranteed

You're only using stats to "determine performance." NFL professionals use tape to determine a players actual performance. That's why NFL professional don't have the same performance evaluations of Carr and Winston that you do.
Actually, I'm not. If you actually looked at the rest of the post, I put up the game clips that confirms my points.
QB stats tell you what happened, but they never tell you why they happened or who performed well or bad. There's not a single QB stat that is the sole result of the QB's performance, so it's impossible to truly evaluate a QB's performance without watching their play on tape.

And the NFL professionals analyze every play of a player, they don't base their evaluations on just 1 or 2 games, or some highlight reels. They study the All 22 version of every play.
You mean an All-22 like this

https://www.pewterreport.com/all-22-film-review-bucs-qb-jameis-winstons-30-ints/
That describes the complexity of Bruce Arians' offense (which invalidates the "between the ears" nonsense people say) and why a huge chunk of interceptions that many said were due to "bad decision making" was actually the receivers making the wrong read. Imagine when most evaluators "evaluate" but don't take those nuances into consideration. All we got was "turnovers prone." All-22 gave us a lot more insight into those "bad decisions" yall love to talk about.