Actually, you used the same tactic against Shady/Cartridge for a long period, and only went on the offensive after basically doubling your numbers with the Synergy merge. That's two of your biggest long-term enemies.
Okay, a couple of points here:
- You have more branches/players than us. So you would expect the total BP to be higher. Also, if I remember correctly, MGGA got their extra branches a while before Noobs got it's 2nd branch (which I don't think we filled). So you have had longer to gain the BP.
- Turtling defensively can lead to a fair amount of BP if people run headlong at the stacks.
I would like to point out that there was a significant period where Noobs was fighting every front (when we fought Black Dawn, Black Dawn's academy, Twisted Souls, Twisted Sisters and Hades Incarnate simultaneously). We had 1 branch of players and didn't hide or wall off enemies with new recruits, and we still came out on top of that war.