I just finished one of the best skirmish battles of mine in a while. It was on the map Bloat and was a 2v3 with me and a NullBot (Insane) ally against SemperFi JS/NullBot/Nexus (all on hard difficulty) in clockwise order. (high power levels/no bases/no scavengers/shared research teams). It took me three tries to beat this setup, but overall was very fun. Try it and post how you do or what you did to beat this.
I will post what I did to beat this if anyone requests it.