It is either that or there is just a very small community playing Brink. I just noticed this morning when I got on to play some matches. In "total", there were about 8 of us online. No matter what game we got into, we kept running into each other, regardless of using the feedback system on XBL. I confirmed this when after 2 games of about 4 players each, which ended up with people disconnecting after completion of the map. At the third game, we all ended up connecting to each other for some 4v4 connection without intentionally doing so.
Still, I am not griping in anyway. The patch worked and I am thankful for that. Just now seeing how it may have worked.