I don't think it was ranked, I think those wait to fill up with real people.
Ranked in the first Gears was crap because it was all cheevo whores. You couldn't even 2v1 an opponent without risking some idiot freaking out because you "stole" their kill, even if you did all the damage and downed the guy. Player matches were awesome though.
Gears 2 host system was terrible so I didn't do much PvP
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Donny: Are they gonna hurt us, Walter?
Walter: No, Donny. These men are cowards.