Board Thread:Questions and Answers/@comment-33935463-20180426192324/@comment-4148373-20190207225139

Q6w7e8r9t0 wrote: If we assume neither of them get the jump on the other, then it mostly is just down to if GER can cancel time stop or not.

The best explanation for GER in EoH that I know of is that TWOH gave itself immunity to GER beforehand. It's also possible that, like how GER had immunity to time-stops because it was essentially born to fight a time-manipulating Stand, TWOH might have innate immunities to some other Stand powers. Possibly all other Stand powers. And, like GER, that immunity might not extend to its user. Hence why HA DIO's arms, and thus TWOH's arms, could be taken off by the side-effects of D4C. Well, or just of reality-hopping in general. Not sure.

I like the idea that TWOH might have innate immunity to other reality manipulating Stands, though. It furthers the parallels between DIO and Giorno's Stands.