In addition to everything that has been said thus far, I would say another reason for stagnation on this server (at least in terms of US) are port capture windows. I'm going to go ahead and make an educated guess that the US has 0-1 non-USTZ clans. If you look at a good majority of ports held by GB or other nations, most are set for 12-14 or 14-16. This game is a hell of a lot more casual than EVE and very few people are going to pull alarm clock ops to retake ports that early in the morning. Can you take a deep water port with a handful of people? Sure, but you better hope it's not defended by more than a Cerberus. So, there you have it PVP2. If you didn't know the secret to winning the server: cap and set port windows for real early USTZ. The server is too underpopulated to force real fights.
While we're discussing the decay of PVP, I just want to throw in a quick "get rid of reinforcement zones asap" sentence in here. I know it's coming, but not fast enough.