there's room for 7 cups on a grid.
saw an update to this thread so dropped in...
??? I am not sure how you squeezed 7 cups into one grid. from the image provided the left grid line cuts through the first hole about 1/3 to 1/4 of the way into the hole then the 7th cup only makes it about 1/4 of the way.
at best I think you could argue 6 cups fit within a grid but not sure how to interpret 7 fitting inside unless that was a typo.
either way, I believe Danny's / Naturali's explanation was always based on 24 inch grid and on the premise that all grids are equal versus changing grid sizes.
update - went back to EA and found a screen ruler that could measure pixels and checked 3 different game window sizes then estimated how many would fit within 1 grid on each -- small window (5 cups) med (5.5 cups) and nearly full screen (5.6 cups).
on the premise a cup is 4.25 inches using the largest display setting result of 5.6 cups = 23.82 inches, which sounds pretty close to 24 or close enough. Maybe the smaller formats get squished a bit.