I notice reading this thread that most of the wins listed here are short because people have conceded.  I've played a couple games where we don't even bother rolling first turn initiative when my opponent concedes.  This usually comes from me playing archmage on Grotto.

I think the fastest game I've ever played that actually went to 200 points was 2 rounds.  It was a fun match where I was playing Balor/Chimera/wardrummer on Teleport Temple vs. a mostly sneak attack band with Artemis.  I won my map and side despite the CR disadvantage.  First round, his speed 6 critters couldn't get to the nearest teleporter and were poorly positioned in a close group with only tile grabbers being elsewhere.  After winning the second round initiative, I moved the Balor in via the teleporter then followed up with the Chimera who used the roar to force morale saves.  With the -4, everyone except Artemis failed both saves.  With my newfound allies, I proceeded to pummel Artemis.  With tile points, that put me over 200.