A few points:
1) The Saints game was not "won". I was there, and the game would have only have been TIED if Tucker hadn't picked a bad time to miss a PAT. That hardly guaranteed a victory.
2) You dismiss Jackson's wins because they were against "soft" schedule. Two of Flacco's four wins were against 6-10 teams (BUF, DEN). Only the win @PIT was vs. strong competition. The win @TEN was also solid, but largely a defensive domination (shutout). The team looked terrible losing @CAR and @CLE.
3) Lamar came in and did what was needed against bad teams (at home and on the road). He almost pulled off an amazing upset @KC, and did pull it off @LAC.
There's no way to know for sure if Flacco would have been able to go 6-1 vs. the same schedule. I personally doubt it, since they had not managed 6 wins in any stretch of 7 games in the previous 3 seasons. Yes, the defense was playing very well. If Mosley hadn't gotten that pick to seal the win against CLE in the last game, maybe the narrative is somewhat different. But Jackson earned the trust of the Ravens coaching staff -- no one was forcing them to start Jackson once Flacco got healthy. They believed he gave them the best chance to win.
1) They were up 17-7 going into the 4thQ. Between the missed extra point and the defense shitting the bed (IMO, this doesn't happen if Humphrey is there), they gave the game away. That game was won. Them losing had nothing to do with Joe.
2) First of all, I didn't dismiss anything...wins are wins. However, you would have to know nothing about football to say that Jackson played a tougher schedule than Joe. And it doesn't matter who the wins were against in the first 9 games...its about the overall schedule, thus the point of mentioning it.
And your last paragraph was right...the team trusted him, including when he crapped the bed in the playoffs. I am fine with how things worked out. Hindsight being what it is, of course it was better than Lamar got game action in and started to learn and win. That's better for the future. But I don't have much doubt that we would have been in the playoffs with a healthy Joe and had a better chance to beat LA as well.