Lop-sided servers

Just  my hyphotheses, but:

1. Player count is so low these days, there are usually only one or two active BT servers at any particular time.
2. BT is the go-to mode for many of the remaining try-hards in the game.   I had the "pleasure" of playing against one the other day who was very eager to tell the all chat that he was top 5 in the world several times.   His team took the L by the way.
3. A lot of veterans only play a certain side (attack or defend) for each map, and they are completely expert in how to dominate it.