Board Thread:General Discussion/@comment-40052224-20190706170706/@comment-38952966-20190714165344

That... that's not how Stands work. At all.

The corpse parts can awaken your Stand, in the same way that the Stand arrow can, but it's still definitively YOUR Stand. By your logic, every Joestar should have Star Platinum or The World and that's obviously not true.

We don't know what the root universe Diego's Stand would've been, because he inherited Scary Monsters from Ferdinand because of the Left Eye. But Scary Monsters for sure isn't Diego's proper Stand, so it probably would've been The World.

DIO and Jotaro having the same Stand is one of the major mysteries of Jojo. The real reason of course is that it's an Araki ass-pull to make the fight more intense. It's not deeper than that.