Quote Originally Posted by Zplinter View Post
One thing that needs to be considered here in addition to all that has been said:
JP servers (and players in that country) ONE time zone
NA servers: the rest

This is not the say that NA players are not on JP servers. We all know that there are, but the majority of the player base for the JP are in the same time zone. That really helps.
JP servers: everyone close to Japan. You know, like Australia and New Zealand, and south-east Asia?
NA servers: everyone close to the US.