It is commonly believed (and quoted) in several other forums that Vettel’s race victories are mostly in modern Asian circuits and that Hamilton has a better record in Europe. In fact, that is not true at all.
While Vettel does have an overwhelming superiority of Asian GP wins over Hamilton ( 20 to 5 to date), he has a slightly better record in Europe as well. Vettel has won 12 out of 56 races in Europe (14 of those races in non-Red Bull cars) whereas Hamilton has won 11 out of 61.
Therefore, the correct way of expressing this comparison is that Hamilton’s record in Asia is poor by comparison.