Yes - everyone is equal.
At birthright?
Well, the oldest sibling gets the Father's love.
The youngest sibling gets the Mother's love.
The Middle sibling? Well, they belong to Society...
etc, etc
So you see - one gets more than the others in regards to one thing, but misses out on other things.
We are all equal.
Even if there is a Culture that currently 'rules' the world, but lacks a race of its own...
...its because there is a Race out there, that lacks a 'culture' in return.
If one people has the greatest population, chances are they lack an 'individual' representation... unlike another.
We are all Equal (One).
But you will never understand or see that, beyond just flippantly saying it just to sound 'goodie goodie'...
...until you see and understand the 'differences' first.