I've seen my name pop up in these threads a few times.
It's inaccurate tho, I'm literally only good at 1 mod and average at rest, doesn't exactly classify as "the best in the game"
For me the overall skill is what counts, and thus,

Id say Cold (Looking at his recent performance)or Killer3366 (Such an amazing lenshu and rk-mma player while still being good at other mods)