As my sig says more or less only play 2v2s. Searchtimes for me are really good. Never really counted though, but dont think I have been waiting more than 2 minutes for a long time. Sweden, Europe. Weekends I play varied hours, weekdays I play 18.00-21.00 (GMT+1)
same here.
anyway that graph counts singleplayers too and since last dlc was sp heavy I guess that's a pretty big chunk.
and I guess the new players that tried mp have low ELO and are pretty much just playing each other, or they just ran away from it in shock after being raped.
in 2v2 I often end up playing the same people, with some allies we're almost an implicit arranged team now while it's good to run over that douche foe that trashtalked a few games back.