They updated the system war a while back to no longer include a Mith payout or war tax (which is what they distributed to the winners). They did this due to the long time abuse of the system rewards, even if removing war tax was a bit outdated since the introduction of Epic Battles. It's not new news since they made an official announcement on it a while ago. However, I'm not surprised that people are still finding out about it since System Wars are rarely used nowadays.