User blog comment:Kogath/Monster Hunter: World Discussion/@comment-12049719-20180212100800/@comment-4969421-20180212101409

Diablos has turf wars with Rathian and against other Diablos. You can interchange them with their subspecies and the outcome will be the same. Meaning Diablos/Black Diablos can have turf wars against Pink Rathian and win, and Diablos vs Black Diablos is a 50-50 like the original.