The arcade machine will have a resolution of 1920x1080px, and you should use the Xbox prompts as the controls printed on the arcade machine will be Xbox style.
Here is a rundown of how the controls will relate to each other:
Hey there! Wasn't there supposed to be labels on the arcade machine buttons? which is 5, 10, A, B etc? I'm not too good at diagrams, though... But I've spent the last 15 minutes trying to figure this out... Am I missing anything?