2 main things I posted in the chat but will reiterate here.
Our bigs rotation (and ironically foul trouble kept the guys pretty fresh) wore down Bacot as the game went on. Our offense forces opposing bigs to guard a lot of picks and keep moving for long shot clocks. There's not a lot of just sitting on the block with your hand on a guy's back. At the pace UNC plays and the minutes that Bacot played, he had no shot and lost his legs in the 2nd.
Our offense is like that Remember the Titans quote. "Just give it time, it always works." With the vision of our guys, the cutting ability, and the scheme, we just put teams in the blender. If your coach isn't Bill Self or close equivalent, we're just going to keep getting wide open 3s, layups, and/or dunks as the game progresses and focus gets harder as you get tired. It's really tough to outscore us when our shot quality is so high and our defensive backbone with Clingan/Johnson is so strong.