John,

Good question.

The definition of "equal" is:  being the same in quantity, size, degree, OR value.

This morning, US$1.06 equals 1 Euro  Ten Euro's worth of petrol, can be purchased with $1.60 in U.S. dollars.

Thus, it can be said that everyone for whom Jesus Christ died are equal in terms of the death of Jesus.    We are also equal as humans in that we are all God's creation.

That said, we are each unique, though of equal interest to God.  (The hairs of our individual heads are counted by God ...)

Whatever differences there are cannot make insufficient God's grace. (For where sin abounds, grace much more abounds)

My sense is that there may be a better word to describe what you were thinking about when you asked the question.  Please share.