You have to see things clear that there are two sides on this story. First of all you have the players that are trying to get a rate as high as possible. But really do they actually know on which team the higher and lower rated players are (average). I don't think so. And then i don't speak about the fact that maps switches and a shuffle of teams is possible. They should check it every map, which would be insane.

Any way rated playing in global is a really wrong and misplaced concept for a game like W:ET. I am glad that i don't have any raters in my server or community. All the players are having fun, respecting each other, play objective side or killing side, but overall playing together on 1 place and experience the game play the want to and at last there are members and Admins to take care for fair game play restricted by serverrules.

On the other side you have the server community member/Admin. Its their primary job to keep the server as status of great gaming server where people having fun while playing. One of the jobs they have is to keep the teams balanced. For balancing teams you have two options. Look at team player numbers Axis/Allies or you have to look for XP by pressing TAB. For me as own server owner i prefer to look for the second method, because its simple better. If can see that the teams are uneven by xp, we can simple even them.

Best advise for everybody: Enjoy the game for what its made for, and we will continue having fun for a long time.