It's not WR that matters. What matters is the level of play. Chinese superstars, like YY, ZJH, LD, usually are already at the highest level before 20. For example, LD was in the MS final of 2001 All China Games, and lost to Luo YiGang in 3 games. He also beat the (then) reigning OG champion JXP if I remember correctly. ZJH beat all the top players convincingly when he was 19. CL, on the other hand, is already 20 but still clearly below the level of most top 10 players (LD, LCW, PG, BCL, CJ, TH, SDK). Furthermore, taking into account his size, 2-3 years from now he may be troubled by injury (as BCL and CJ). Overall, I doubt CL can reach higher than a typical 3rd or 4th MS in China. May end up similar to CY.