From what I've gathered these are the things that grant a possibly Low 2-C rating (Not saying they should be universal because of these, just that these are used for the possibly):
Zeus calling the big bang a thrill
- Basically Zeus looking at the big bang as nothing more that something that excites him [Big Bang being the event that created universe and spacetime], they it was presented also eludes to him tanking it or viewing himself above it.
Zeus Defeating Chronos, The personification of time
- Defeating the embodiment time, a universal construct. I believe this can grant Low 2-C from what I've seen, but needs much more evidence and context.
Zeus Destroying Heaven
- This one was believed to be universal as the assumption was that heaven was universal in size or infinite using the "Infinite Providence" statement, which was debunked in one of the older threads iirc. Either way, Heaven hasn't shown to be universal in size yet. Bare minimum it has a moon and sun.
Zeus being the the Father/God Father of the cosmos
- For this one, a little context. Adam was called the father of humanity/man as from him came humanity spawned, being the first human and all. In response Zeus was called the the God Father (Father later) of the cosmos. This either implies [Being the father] that Zeus created the cosmos, which could relate back to Zeus being stated to have creation powers. However, If you regard him as the God Father, it implies that [Zeus being the God Father] a being from Zeus pantheon created created the Cosmos, and Zeus being the strongest of his pantheon would scale above that individual. The God Father part could also mean Zeus is a God and Father and not Godfather, due to the separation between god and father, which would relate back to the first part of him creating the cosmos.
Either way, I am not saying this is right or wrong, just the only possible pieces of evidence that I've found that can used for the Low 2-C. But as already seen, most lack enough context and further information.