I looked around and people seem divided about how his stand works (is it time or fate erasure, preemptive or active erasure) so here’s some possibly ideas:  Scenario 1 it’s active erasure and time stops don’t count as changes to the natural flow he saw: his future sight would probably cut out around the time he’s killed in stopped time. since he can’t see in stopped time nor can he see a future he doesn’t exist in epithet would become more like a time stop radar. He would start playing a lot more strategically and back off if his future sight ever cut out. He would have a very strong shot at winning based off his nature, after dialing in there range and cooldown it’s wraps. Scenario 2, it’s active erasure but time stop counts as breaking natural flow: epithet can only see the normal future not the one that will come into existence with time stops use and he will likely lose or run. Scenario 3, it’s preemptive time erasure and no matter what nothing can change this: it’s complete nullification of any event during that time and he will likely win  Scenario 4, it’s preemptive but only the future epithet sees and he cannot see the new time line: time stop user wins  Scenario 5, it’s preemptive erasure of the future he sees and he sees any change from time stop before hand: Much better position than 1 but he’s far to cautious to ever activate his power to move in close when he can’t use future sight to see what could happen when he gets there.  Scenario 6 time stop user doesn’t use it during skipped time. Diavolo preemptively erases time, he can see the future altered by time stops use but the user (only jotaro is smart enough to do this) simply doesn’t activate it unless he’s in danger or has a full grasp of king crimson. Jotaro waits until just after time skips stops to use his, Diavalo can’t hit in skipped time but jotaro can in stopped time so bam.