I wonder ...
How would you define inballance if not like this.
As Sansang said, I'm not saying it isn't currently unbalanced. I'm saying it has always been unbalanced. It's just in the old system humans (Variant Human, at least) and half-elves were at the top of the power hierarchy and now humans are at the bottom and half-elves are somewhere just below elves but still pretty solid. Upper mid-tier maybe.