I am unsure whether this is a bug or if it is intended, but in Brawl matches, Single Pick is enabled in Brawl PVP and AI, however I encountered 2 Aramushas when playing Brawl AI and it was not fun or fair because... well, you can probably guess. To make matters worse, I had an AI Shinobi on my team as my teammate left, so the Aramushas would clap the Shinobi really fast then gank me, and seeing as I wasn't playing a hero I was used to because I was completing Orders, I got absolutely humiliated, lol.