Well, judging by the report, there were quite good chances. Although, I would definitely be too scared to play Necropolis in a skirmish, as well as Fortress.
I remember reading a report on ProGamer about a match against Chaos League (XL+U on 200%), and someone won with Inferno against Necropolis (with Gosh) and a triple-build, and not even with a rush - they outplayed him in the late game.