We know that War Matchmaking is constant rough point of Greed for Glory. With the next update, we are going to once again resume our investigation of system changes that may provide everyone with a more balanced War Matchmaking System.
Stay tuned for more news!AdminGFG Team (Admin, Greed for Glory) commented
The Town Center's HP does affect the matchmaking algorithm. That fact that it's Level 20 does not matter, because with out any upgrades or extra buildings, the "Level" has no statistical effect on the match.