Judging from this game, this is one of those maps where you need to control those flaskers as if they were skeets. In other words, patroll the map, defend and build more and more tanks, but don't attack until you've got enough to finish your opponent.
Games like that are usually kinda boring to watch, cause the offensive player usually ends up losing to the counter attacker.
But maybe it was just this one playing out like that.
Tourney's on, that's the most important thing. Tourneys are the shit.