The point is that all of the quarterbacks mentioned in my initial paragraph improved those teams. Aside from Stafford and Mahomes, Burrows reached a Superbowl, Jackson won MVP and Herbert/Lawrence are just getting into full swing whilst Allen is universally regarded as a top 5 QB in the league.
Prescott isn't a failure. Arguably his game and style is similar to a solid QB like Alex Smith - he wasn't good enough for the Chiefs to win a Superbowl so they moved on, drafted a QB and won the Superbowl.
But hey let's just stick with Prescott for the next 10 years as the last 8 years have been so wonderful.
Yea, this sounds like bias against Dak and not levelling the playing field. One can argue Dak has had more success than Jackson, Hurts, Herbert, and Lawrence - the 4 combined have 1 playoff win. I get a few of them haven't been here as long, but it's not reasonable to predict they'll end up having more success than Dak when it hasn't happened yet. Josh Allen also up till this point has only produced in the regular season, just like Dak. He got 2 wins in the playoffs in that Covid year against the Ravens and Colts. He got lucky he got 2 pretty unscary opponents. But besides that, Dak and Allen both need to beat some upper caliber teams in the playoffs, so I think they're in a similar boat. They can't beat the upper tier team. Dak can't get past Rodgers and the 49ers, like Allen can't get past Mahomes.
Well... the 10 years under Romo wasn't wonderful either. 9-7, 11-5, 1-5, 8-8, 8-8, and 8-8. 1 playoff appearance in 6 years. Like anyone, I'd like to break this playoff rut, but I truly don't see what Dak is doing that's so much worse than Romo and a lot of the other guys you named. Just my unbiased viewpoint. You'll have to produce a pretty good argument to argue that what Dak is doing is below Romo or some of the other guys, because it sure doesn't look that way to me.
Now I agree Dak isn't Mahomes, or hasn't done anything to the level of Mahomes, but to say he's Cousins, Carr, or Smith..... I get that it's your opinion and you're entitled to it, and that's fine, but........nah.