I generally prefer a little BPL over MLS (moreso because I can catch 'em on TV a helluva lot easier, and not because of any perceived 'quality' snobbery) but I won't turn down catching a good match whenever I can. But watching the playoffs, there was one defining thing that I noticed with the two teams making it into the finals:

Portland TimbersColumbus Crew

Their fans show the hell up.

I was absolutely amazed during the final games in the playoffs, all the empty seats at FC Dallas' Toyota Stadium as well as the NY Red Bulls Red Bull Arena. Maybe it was TV, but the crowds at the prior matches at Mapfre Stadium & Providence Park look absolutely rockin'...