C65 Your Majesty Fire at Me(1)
Due to the lack of information, Roger had obviously overestimated Joestar's ability to set up a trap. He had also considered many factors of luck to be Joestar's ability.
For example, Joestar had only randomly chosen the Second National Welfare Institute. He wanted to have a vague reverse view of the city.
In fact, he had already given up on targeting Roger