BB has quite a large stack... combine that with his PT stats and this donk-ish all-in bet. I think you find AKo, QQ, JJ or such junk enough times to call this all-in bet and make it +EV... if you're properly bankrolled for this limit, then I'd close my eyes and make the call here. It's close though, but I can't really lay down Kings in a cash game without a very realiable read.