How come when Dio stops time Jotaro can move but Dio can't when Jotaro stops time?


In _JoJo's Bizarre Adventure_ , Jotaro seems able to move even while Dio stops
the time. On the other hand, Dio can't when Jotaro stops the time.

Why?

Source: DIO's World, Part 3 (DIOの世界 その3, DIO no Sekai Sono San) the forty-
seventh episode of Stardust Crusaders




Jotaro planned to stop time when the limit of DIO's time stop was finishing.

This happened when Jotaro did the finishing blow after he survived the road
roller attack.

And when DIO stopped time, Jotaro can't use the ability but can feel the
situation in this case of "time stop world", but when he can move, Jotaro can
trigger the ability while he is in DIO's stopped time by use his time limit
between DIO's stopped time and the end of it triggering.

He basically counters DIO's stopped time.

