sure he can tip the scales, but KC is truly a winning "team". It wasn't just Offense that won them the game. Mahomes only put up 19 in regulation.
And those coaches are the ones who've filled Mahomes' head with what he knows, and designed the schemes and plays, the stuff that allows him to react dynamically and intelligently, under stress.
And of course they run the D that gave him the opportunity to win. He's not superman or John Wick, but he is very good.
Jerry once told Jimmy he could win with any decent coach too