Bob, Nathan,
I didn't do that, I swear
All I've said that if someone uses "real" screen demensions to created pdf, then to fit same amount of text font size should be reduced.
E.g. with page size 5.24x6.69 I use font size 14. Now, if I change page size to 3.543"x4.606", font size needs to be 10.
Something along those lines