Mahomes also has Andy Reid
Don't discount that.
Plus, Mahomes needs to prove he's able to win when the lights are brightest. Last year he came up short 3 times in huge games: twice vs NE and mnf vs the Rams.
He reminds me of early Peyton Manning. Tons of yards, stats and wins but if the other team can disrupt the wrs KC is done. No defense, very little running game.
KC isn't going to win ugly. The Bills can. NE can.