Clearly KC used the Falcon blueprint as their base defense. Which basically is to be physical and tough in the short zones and clog up the middle using the off side LB/S to discourage short crossing routes the Pats like so much. They were also very physical on the outside guys, using an old Pats tactic which was grab as much as you think you can get away with, because they can't call them all.
Believe me we WILL see some versions of this game plan a lot over the next 3 months. But lets remember that the offense DID score 5 times and 27 points and it very easily could have been more, perhaps a lot more if Brady had been sharper and the game plan more defined. Please credit KC for a good game plan, and better execution. but the Pats brain trust needs to take accountability for not making better adjustments to it, and the players for not executing better.