I do think IS was playing the best Heroscape of anyone at Gencon last weekend. He didn't lose a game and won some really tough ones (pulled out an incredible win vs. Dysole with a single Nakita vs 7 squad figures starting in his own startzone, beat Matthias Spiders vs Heavies).
Top 4 is a bit silly of a way to think about it given Heroscape's strange cultural state as a discontinued game that we get together to play. But also no one was really thinking about Heroscape skill that way. Caps was mostly just complaining that he was matched against Heroscape celebrities in Day 2 who are always tough to beat