22 vs 64 - young star vs veteran
In Korea and China 50+ years old professionals usually cannot beat young pros. Even for top 9-dans, like Cho Hunhyun it's difficult.
The situation in Japan is different. It is still common to play on 2 handicap stones!
As an example you can check this recent game between 64 years old Ishida Yoshio and 22 years old Ohashi.
Ishida, who was one of the top Japanese pros in 70's and who won his last title (Tengen) in 1984 won this game just in 79 moves!
Why the difference in strength is so big? In Japan young inseis usually study Go after they return back from school and in Korea&China it's common to give up school and study Go 10 hours every day!