Board Thread:Questions and Answers/@comment-11642474-20190421200315/@comment-26256072-20190421231727

Omni-Empathy can access emotions from "across all universes, planes, and dimensions, and can access "all ". This would imply Emotion Manipulation on a global or cosmic scale, which makes this power Super Weight 5 or 6.

Probability Manipulation and Biological Manipulation are both Super Weight 3 in their generic forms, though their more advanced variations can also reach Weights 5 or 6.

Since you haven't provided any context for this battle, I'd say that Omni-Empathy wins through sheer power most of the time, while the other two powers toss-up for second and third place.