theres no reason why, if they own the box, they cant setup and run both battle & siege.
The fact of the matter is, the server owner did a very poor job promoting his server. He missed the golden opportunity to steal from the other siege server when it was a lag disaster in the past 2-3 weeks.
He hasnt done crap to try and get his server used, so it sits empty or leechers come in for free exp. Run small maps until it starts getting regular users.
Also, not sure why he setup an east coast server when ALL of the current servers are midwest/eastern. West Coaster players need a server of their own, which would also attract poor Oceanic players.