I agree with Ziah, I hate OU for example so for my first round I could easily say I will only accept a multi battle match and conversely my opponent could say they will only accept a singles match. On a side note, DW + Wifi + Tier of choice each = best of 4?
Amarillo, for round 2 aka the finals it is basically team vs team, so all the 4 matches from each 7 match ups will be added to get the winner.
In i guess, it was hard to pick between UU gen 4, UU Wifi, VGC 2011, Triples and Wifi Ubers, but UU gen 4 is too pro.
I'm not late (Am I?) I'll go with DW Ubers, Since I was ranked 8 in it ;D I'm not having much on my schedule, so why not join a tourney Indigo, you're going down I'll be under Galen Marek