I've been attacked by a player on the primary server whose nw is 4x greater than mine and area is almost 6x greater than mine. We are both GDI members. According to the wiki, "No country more than twice your size or less than half your size will be able to attack you without formally declaring war first."

Can someone explain how this is possible, given the role of GDI?

He might of hit yu when he was around the same NW as you then pumpe NW to avoid your retal?

Well, within the last few hours my $2m networth country was attacked by a $13m networth country in the Primary server. By no measure should this be allowed if GDI is supposed to protect smaller countries from larger countries. My 32nd ranked country simply exists as an acreage farm for the top ten.

He jumped after he hit you, check eestats.com