ive regularly made good money playing dons im not 100% sure about ICM in this spot but from a lot of experience in them I am well aware it is a clear fold.
I highly doubt im beat in that spot but as someone else said KK is only 70% against ace rag. my odds
of placing are well above 95% in this spot and taking an 80-20 usually isn't a good idea either. I might call with AA but theres a good argument for laying even that down.
i haven't come across them much before so would be hard pressed to suggest large samples.
the spot is rare big stack v big stack with two small stacks and having 2nd best hand possible happens probably one in 1000 sngs or less.