In my opinion the tournaments format wasn't optimal(but one could say I am looking for reasons). The thing is there were 20 players and they were divided into four groups and top two of each group made it top 8. Why not have all top 20 contest each other instead putting them in groups? and then top 8 should progress, that way its more fair.
Or if you really want to make groups, why make 4 and not two? Atleast that is more fairer than group of 4's. Dota 2 International's format looks much fairer than what we had for tekken. But again, I wouldn't have been making this comment if a Pakistani had won.