Except everything there is basically u assuming DIO activates before medaka. Time Stop Vs Time Stop, neither will activate first, they are both nulled when taken into account with speed equalized.
Will RO rly be able to overwrite Encounter when it's not even in contact with it doe? That Encounter barrier is basically a portal or wormhole that takes the dmg u deal somewhere else or just sucks up the dmg to then restore afterwards.
Why won't Medaka copy TWOH, u just said Kars is the ult being and that's it. Just cus he's called the ult being doesn't mean he is, by that logic Medaka surpases the omnipotent Ajimu, so good luck beating that. The End can copy any thing that's considered an ability, so basically anything that's considered hax of some kind, that's not raw strength but rather something u have at birth or cultivate along the way (even baseball playing skills and shit) can be copied, Medaka is called "perfect" cus she just perfects everything she sees, that's the idea behind The End, i don't see why stands are "out of reach" due to them having been copied before.
Medaka's overall more convinient hax take this.