Remember, all voltage is measured between TWO points.
It is impossible to measure the voltage at one point in the circuit so if the two points that the voltage is being measured across is not explicit then that means it is implicitly using some other point in the circuit to measure against which is whatever you have labelled as 0V/GND for your circuit.
If you agree that the voltage across the LEDs in both circuits are the same, and you agree that the voltage across the resistors in both circuits are the same then you must also agree that the voltage measured between the ONE point indicated in your schematics and ground must be different (if the voltage across LED and resistors are not equal).
If I am 5 feet tall and you are 6 feet tall these heights will not change as long as you measure between head and feet. But if I stand on your head or you stand on my head, the height between the groundthe ground and the head of the person on the bottom will obviously be different depending on who is on the bottom.