How to compare coordinates?

Question

2D

It is necessary to compare the "y" coordinates of the characters, and if they are equal, then one method works, if one of the characters has a larger coordinate, then another method works. But the problem is that the surface on which they stand is the same, and the "y" coordinates are different, because of this, the second method always works. Screenshots below:

Answer 1

As a simple solution, you can move the pivot down of the player and enemy sprites in the Sprite Editor so that the player's position on the axis doesn't differ that much when compared.

Answer 2

First, explain how you managed to use 3 different coordinates on a plane ( two-dimensional ).