Let's hear some counterpoints on why peeps (if anyone) thinks KC will win.
Since I am a betting person, I always try to find points for both sides. As said above, this one is more or less a coin toss for me (will probably take SF for the poll), but let me try to find some angles for a KC win.
It's obviously difficult to counter the hard facts @DireWolfM14 posted. But KC had the slightly harder strength of schedule and Mahomes was missing a few games. So....
By looking at the stats above one can quickly discern that the 9ers lead in 3 of the four offensive stats, and 3 of the four defensive stats.
....could easily be SF only leading in 1 of four offensive stats, since 2 of those stats are so close (ypg & ppg). You would have a 4-4 tie overall then.
The postseason stats, which is of course a very small sample size, gives SF a 5-3 advantage. Not sure, how it would look like, if you disregard that first quarter in the Texans@Chiefs game, where KC just came out rusty and flat - outscoring them 51-7 afterwards, being 0-24 down early in Q2.
So, yes, the hard facts point to a SF win. Lets look at some soft facts.
KC has the coaching advantage. Without trying to sound disrespectful, Andy Reid is a poor mans version of Bill Belichick for me. A very experienced coach, an offensive mastermind who probably has seen it all. Kyle Shanahan is still a young coach and there is not many coaches around 40 years of age, that managed to win the SB. His father could give him some valuable advice, but he is not around on the sidelines during the game
The 49ers weren't really tested yet. They have been so dominant, that they didn't have to show their best yet. This could be a good thing, but also a bad thing. Especially their passing game could be a bit rusty, after having been so good on the ground and only using pass plays every now and then to keep defenses honest. We could see this backfiring on them, if they have to rely on the passing game being down late-ish in the game. An offense always has to click and I am not sure, if the passing game of SF is clicking with being put on pause for so long.
KC was able to limit Derrick Henry and the Titans run game to 85 yards. They will probably be able to limit SF's running game too, despite not having a good run D on paper. Steve Spagnuolo has shown in SB XLII what his defenses can do.
In the end I would think this game is all about the SF offense vs. KC defense matchup. I expect the KC offense to show up and the SF defense will have their hands full then (see the SF@NO game). If the SF offense is not showing up, they might be in trouble, because KC will score rather a lot me thinks.
So far for some pro KC points that could be made. I hope and think it will be one hell of a game and I can't wait.