User blog comment:Goldenrebel25/I just realized something./@comment-6138112-20140909103225/@comment-5590986-20140909123907

UPMU started in September 2013 originally as a coalition against Arcy. the GMA started in November also as their own alliance against Arcy.

Basically the GMA is actually more leftist than UPMU is their main difference between each other. But they never fought suprisingly, also the fact the GMA claimed victory over arcy (probably because they declared war while UPMU tried to work out diplomacy)