Rounds 1 and 2: Not sure if this needs explanation, we're talking gravity manipulation vs time erasure.
Round 3: Diavolo predicts MIH attacking him, erases the moment and repositions himself, with KC's hand at Pucci's neck, should be an insta-kill as KC has shown itself to be one of the physically strongest stands ever, and Pucci is moving at incomprehensible speed into the attack which makes things much worse for him. Diavolo wins.
Round 4: Since he has prior knowledge, Pucci will be more careful, and won't just charge into Diavolo, but this round gets extremely complicated: Can KC erase what he views as 10 seconds, or the 10 seconds from the perspective of Pucci and inanimate stuff? If the latter, MIH would win: MIH can easily mass spam knifes, at its speeds Diavolo wouldn't be able to erase any noticable chunks of times, and it would end up with the knifes. If the former, KC will likely win, but there might be yet another freaking question: MIH moved in stopped time, can it potentially move in erased time as well? We're saying no because that's kind of stupid. So it's really just the first question, kind of invoking Occam's Razor here. There is actually a thing worth pointing out: King Crimson would be erasing the movement of the knifes, so logically the latter scenario of relative to itself would happen, meaning KC gets ******. But at the same time, it's possible that KC might still do it relative to itself, though actually not as likely.
So KC stomps first 3 rounds, round 4 is inconclusive with leanings towards MIH.
