the desktops are much faster, i was shocked at this at first aswell.. several factors that have been mentioned that cause this the 48xx printers interwieving is done in the firmware not the rip and the carriage always makes a full trip left to right regardless if theres just a small image center of the substrate!! I have watched this over and over to confirm it (notice you rarely ever see a real time print on a 48xx series printer? its because they are slow in comparrisson to the desktops) they do however produce a great print and i think this is because of all those factors aswell!!) Afew of the manufactures incorporate a multiple platen system to improve workflow of the 48xx (you can be curing one as the other prints) some other factors would come into play aswell like rip brand..Strange ... The Pro 48xx should not be faster? I believe that was delayed is the start time. While HM1 was already in position to print, the Viper was still loading.
The printed image was small, with few details, I think this also helped HM1 win. Another test should be done with a larger image with more details and start two machines printing together.
Perhaps in this way can even change the outcome.
P.s thanks for the kind words and you keep your head up aswell!!