game runs faster on bigger screen size?

i have done almost everything but may game still running faster on bigger screen and i know its mater of screen size and not processor because i test small and big screen in unity in my computer
so the same processor speed and frame rate is guaranteed and also testing in many android devices . note i have simple moving object and script attached to it and i used : Update function with and without deltatime.
FixedUpdate function with and without deltatime. and i got the same result.
so i’m i right that bigger screen size increases my game speed because then i can scale may variables depending on screens width .

The game speed is screen size independent. Unless you’re doing some calculations with Screen.width or something along those lines, this will always be true.

The only thing that changes when you change the resolution is the camera view cone.