Question: How can it be that at the end of correction there will still be some differences between us, but at the same time will we be totally equal?
Answer: It is like a philharmonic orchestra in which every musician is an outstanding, well known talent, but one plays the violin, another the viola, and another the bassoon, and so on. All the players differ from one another, but at the same time they are on the same level.
This is the equality that we want to reach among people. Although they are all different by nature, we still want them all to reach the same level. If everyone bestows upon the whole integral system, he is completely equal to the others. There are no great or small. These differences exist only until the end of correction, and then afterward, everyone complements one another and they become equal.
From the 3rd part of the Daily Kabbalah Lesson 1/17/14, Talmud Eser Sefirot