This page shows statistics per Blitz servers/regions (EU, North America, Asia, Russia) during update 7.7. Statistics for the Chinese server are not available via WG API.
This graphs shows players by region in the dataset who have played at least one game. Please note, this does not mean all the players per server, but just those who have been recorded in the BlitzAnalysiz database.
This graph shows players' overall WR distribution during update 7.7 on different regions.
These graphs cannot be used to say anything about the skill-level differences between the servers. Instead, the graphs tell more about the player sampling per server. BlitzAnalysiz database has relatively more players from EU and NA (com) servers vs. RU and Asia servers. In all the servers the players sampled are on average more active and better than the true player average due to the way how the player account_ids are being harvested.
This graphs shows the same information than the previous in different format. The curve tells how large share of players (y-axis) had WR less than (x-axis) during update 7.7.
This graph shows the popularity of tank nations by region/server.