I've always really disliked this map but with some good players it's certainly alot more interesting.
I presume the Commanders here aren't even allowed in the alley, nevermind the middle, so it's a nice clean fight.
I suppose the best aspect of this demo is that even when you have the middle you don't have alot of easy options to finish the game outright. If you take the obvious choice of Big Bertha then you won't get far.