Two things: 1) no matter what, the Niners aren't winning the SB as Shanahan loses his mind in big games (SB v. KC, last year's NFC Championship game, SB v. NE as ATL's OC), typically goes pass-wacky, and abandons the run and 2) there's only one ball: so although they also have Samuel and Kittle to go along with CMC, there's only so much you can do (although Shanahan does design many excellent plays). Actually, there's one more reason they'll fail to win it all: Jimmy G. Dude's very average and good for 2-3 completely inexplicable, head-scratching throws each game.
On the other hand and despite his health issues, CMC will absolutely destroy us.
On the other hand and despite his health issues, CMC will absolutely destroy us.