That's lies. There is a big amount of natural got 10th dans or custom belts and they perform poor ingame. Playing is the worst thing you can do to master this stuff.
Yo, dead seriously:
A considerable amount of people do duels in judo and judofrac, we should start owning this mod and start making the TC. We should make this org official and / or start doing events or tourneys. No need to go huge 5-10k in start in prizes should do just fine