Doing a quad in combination doesn't actually mean you get more points for the quad. At Worlds, Yuzuru landed every one of his planned jumps, missing out only on a UR 4S, which in the end cost him about 7 points, so his ideal score would have been around 213-215 depending on PCS. Today, in effect his 4Lz replaced his 3Lo and he upgraded a 3S to a 3Lz, which is only about 1.6 + 6.6 = 8.2 points in base value more, so a clean skate would have put him at around 227+ depending on PCS. The lack of the 3As (16 points), the 3F mistake (8 points) and the 3T pop (another 4 points or so) leaves him 28 points short, so his actual score isn't too far off.