I know a lot of people will not agree with this, and that's fine. As long as it isn't a Manning-led Broncos team, I'd just assume see them win it all if it isn't the Patriots, provided we don't get a screwjob against them again. It would just bookend Manning's career, as both the Tennessee Volunteees and Denver Broncos would be champions immediately after the choke artist left, leaving no doubt that he has always had incredibly talented teams and above adequate coaching. That would be something else to have that distinction.
In addition, though there are several players who I hate on the Broncos, such as Sanders and Ward, there is no way that without Fivehead their level approaches other teams who are filled with jackasses like the Steelers, Ravens, Colts, Jets, etc.
Finally, I don't like when a team is bad to mediocre, wins a Super Bowl, and then returns to bad to mediocre. To me, it cheapens the sport somewhat and gives too much praise to a franchise that was more lucky than deserving. So teams like Carolina, I cannot root for. They need to put in their time, so to speak. The Broncos are 47-9 since 2012. I would rather see a worthy franchise win (provided it isn't one of the aforementioned teams) than a flash in the pan.