[hyperpape]

I feel like this is mostly misleading. Look at a list of top players (goratings.org). The top fifty is mostly players 5p and up. There are a few 3p or 4p Chinese players running around, and apparently even 1 1p (Li Qincheng) but by and large, there is a relation.

[hokkos]

The beaten player is ranked 633 (Fan Hui).

[hyperpape]

Yes. He's a case where you'd make exactly the right assumption if just told his rank.

Though I should warn: as a low level pro who moved to Europe, this database has very little data on him. His European results indicate that he's stronger than Pavol Lisy, Alexander Dinerstein, and Mateusz Surma, who all rate higher than him here.