You know, I don't agree that they are the same. But I went back and watched to be sure. The only similarity I can find are the use of vocals.
FC: Starts by banging on the horns and goes into vocals 1, 1-and, 1-and 2, then dies away as percussion takes over.
P: Pressure starts with percussion and different sections shout from different parts of the field, but the vocals get louder and take over.
FC: horns run in snakey kind of forms around the color guard who starts dancing
P: starts in straight line and folds out from center with little groups of brass, percussion broken up, and guard in giant block with rifle
FC: big ending is with percussion on one side and brass and guard together on other side doing quite a long movement phrase that begins with guard member being tossed
P: big ending is brass around percussion while rifles do a massive exchange while horns slide to ground pointing to percussion
I really don't see any similarities other than the use of vocals. And when it comes to THAT, Cavaliers are certainly not the biggest offenders! The drill is not the same, the music is not the same, the phrasing of the music is not the same, the guard is on different equipment, there is no big movement feature for the horns, and no guard member is thrown.