Holy crap! I know Xianghua is not the best character (or so I've heared) but I still got a bit nervous going up against one at 8100 RP (Rank 20 world with Xianghua) with me being around 2k. Managed to win two in a row, felt so good. To his defense it felt like he had very little experience against Grøh. Still, I think my skill with Grøh is starting to improve. I am only doing basic stuff but trying to learn fundamentals first. Grøh is one of the most fun characters I've played in a fighter!
Honestly, the ranking system in this game isn't very good. It's more about how many games you've played and less about skill... at least at this early stage. Maybe things will change as the game matures?
I checked out the top Azwel and he was pretty bad. Last I checked I was rank 20 or so, but it's a grind to climb even though I typically go on 10+ game win streaks. I simply don't have enough time to play to get up to the 12k points the top player currently has.