Could be. A PW galaxy map screenshot
suggests it lasted 130 rounds and ended on the third day. I think there was some cheese involved in the meta-game with both sides' starting planets having been very close together, or factions rushing at each other. I don't remember this exactly.
What I do remember is that I felt like the metagame didn't really get in the way. Furthermore, the infrastructure was designed around getting games to start, generating activity and iirc even made you motivate faction members to join in on attacks/defenses. It probably also had the potential to get people to recruit more players to their faction - this includes newbies and players from different time zones. Battles being limited to 1v1 - 4v4 (or 3v3?) was also quite nice.
I suppose the 2-faction-limit and the limited time each faction had to sign up for an attack/defense were important for this. While this could occasionally create unfair situations (ingame, but also metagame wise), that didn't matter (at least for me) because players were always encouraged to give their best, if just to destroy the enemy CC before a loss or to delay the inevitable and "trap" enemy players in a battle so they couldn't join the next attack (especially when the enemy team has higher elo than mine).[Spoiler]
I already said this a couple times, but the last round of PW even made me play a couple 1v1s