1 - reach Apple via the iPhoto menu ==> provide iPhoto feedback
2 - it is very likely that the difference in print quality between the two calendars is due to the pixel dimensions of the photos - you need a minimum of 180 dpi for good quality prints and 300 dpi is better --
http://support.apple.com/kb/HT1035 -- so printing a low resolution photo smaller gives much better results - that is simple physics and has nothing to do with the source of the printing
A full page photo on a calendar must be a minimum of 2375x1905 pixels for good quality
LN