I'm not really sure where to go with Kibitoshin's strength. He marvelled at it initially, yet seemed to be submissive enough that he considered himself useless compared to both Goku and Vegeta after he got over himself. Since Vegeta's got a more solid place to put him, I'd go with Vegeta. Hell, Kibitoshin even considered himself irrelevant enough that he might as well defuse in the DBS manga, though to be fair practically any of good guys who didn't have a form with either "God" or "Blue" in it's name was irrelevant at that point.