I pulled my tape measure to compare the screen sizes of the Mogul and Touch pro. Keep in mind that these measurements are only accurate to 1/32''. The mogul's screen measurement is taken assuming that the mogul takes up the full screen. I recall that it does. I can't power up my mogul as it died 2 days ago.
Mogul width 1 23/32" Mogul height 2 5/16"
The Touch pro was measured with the screen on as it isn't completely filled.
Touch pro width 1 21/32" height 2 7/32"
So the mogul's screen is 1/16" wider and 3/32" taller visibility wise.
Again, I remember that the mogul used it's full screen so I measured the full visible area while turning on youtube player which uses all visible area
AFAIK.
I do prefer the higher res though. Just some info for those that care.