That doesn't clarify anything. It's like saying whatever a tree is, is a tree. You're talking in circles.
It really isn't the same thing. You already know what "The Ultimate Reality" means. If I were to tell you what it was, I would be making an identity fallacy. I would not actually be clarifying, I would be making further abstractions which would take away from what the concept actually points to.
So I trust you know what the concept means. If you really do understand, it shouldn't be too hard to figure out why me trying to equate it with something else is foolish.
It Is That It Is.
The Supreme and Ultimate Reality. Exactly what that means. That is the definition for the word "God".
I see no reason to accept your ultimate reality is either indistinguishable from reality or can exist without it. Something more substantial than assertion is needed to move beyond this.
It is for clarity sake. To distinguish that which is real in a contingent sense from that which is eternally real.
If something doesn't have reality, or doesn't in reality exist, it is is not real. I don't think that is an extraordinary.
In fact, I am not making any extraordinary claims at all.