Getting the position of a Image Button inside of a billboard GUI using InputBegan dosen't work?

So I just realized that getting the position of a 2D GUI perfectly works and it is accurate however when I try and get the position of a ImageButton inside of a billboard GUI it is not accurate

Heres an example

I press an Image using a

Input began event

2D Image Button Script

ImageButton.InputBegan:Connect(function(Input)
    print(Input.Position)

end)

WORKS PERFECTLY FINE AND RETURNS THE MOUSE OR TOUCH PIXELS

The vector3 value of where the mouse is

510,432,0

I did the same with a ImageButton under a billboard GUI which resulted in

ImageButton.InputBegan:Connect(function(Input)
    print(Input.Position)

end)

This returned a different value and a much smaller value of

13, 57, 0

and we know this is not accurate because this would mean that the mouse would be at the very little corner which is almost impossible because my computer is 2000 pixels and you know how small 13 pixels is compared to 2000 pixels

So basically

To be more specific im talking about screen pixel size

For example a 2D GUI would have a screen pixel position of something like 240, 50 depending on where you pick