While this is bumped, check out this quite similar finish I had in an FMC solve today.
() = done on inverse
U L2 U' F' R' B2 //2x2x2 (6/6)
L2 F2 U' F2 //Pseudo 2x2x3 (4/10)
(U2 F2 L F L2 U') //F2L-1 (6/16)
L' B L' D L2 D' L B2 L F L' B L F' //LS+LL (14/30) <- (Tim Wong'd the last pair and had the inverse of the same 3-cycle, this was the optimal insertion)
Then again, that's true for a lot of events already. Sq1, clock, skewb, pyra, 2x2, 3x3, bld etc. Since 20 move optimal is rarer than I thought, it's not a huge deal
I think you missed the point of Cale S.'s comment. FMC is the only event where you can get a scramble that has a strictly defined barrier for how well you can do with it. This isn't the case for any other event. i.e. If you get a scramble for FMC with a 20 move optimal solution, you can't beat Tim's WR. On the other hand, you could get a 2x2 scramble with a 4 move optimal solution, but theres no strict limit for how fast those four moves can be executed.