Nah, I don't think so. Out tiering system is based on their (which by itself was based on Anime Characters Fight Wiki), but this doesn't mean we have to follow any change done by them. An example I could bring up would be Striking Strength, which wasn't changed or affected by their revisions.
Well 2-A Unicron is backed by 1-B immortality. He also is resistant to reality warping, magic, law manipulation, space-time manipulation.
Pre-shroud/singularity Unicron has a type 2 conceptual manipulation and has type 5 acausality.
On Unicron's page, it's stated that his avatars devoured the multiverse/cluster and they scale to Prima, who had Star Saber capable of destroying one multiverse. That's for attack potency.
Lifting strength seems to be immeasurable for 2-A Unicron.
Well, you would generally have to at least hange the wording, but if the original page was made by you, I guess it would be fine. But just keep in mind that we use a different Striking Strength system from theirs.