Board Thread:Questions and Answers/@comment-38524365-20190521164328/@comment-39117959-20190527231623

It's Changing the user's own existence from normal to Absolute Existence without any limits and that called Absolute Change and since any change is under the umbrella of Absolute Change then Absolute Existence is a sub power of Absolute Change.

>I think there equal in terms of power

Both extremely powerful and both of them have it's own distinct power, With AE you have the ability to control your own existence without any limit and with AC you have the ability to change anything/everything without any limit.