That seems fair, but Kumagawa unlike Giorno did not demonstrate that scale and Kumagawa is still relative to time unless he pre rejects it, also unlike GER. They can do similar things, maybe even the same things it's just GER has shown greater scale. I don't think I explained it's brokenness enough. GER automatically one ups any sequence of events. Someone on another forums put it nicely. If you have events A,B and C, even if C already happened, Giorno can erase B or A, making it so that it didn't ever occur. And it's not simple time manipulation it's simply Broken. It alters the actual concept of an event. Not only did he beat a universal scale time manipulator, but outside of time, the effect was the same. In short, it's irrelevant if Kumagawa even attacks or not. The very concept of taking the action is altered beyond the concept of time.