Super Saver shipping means that you don't care about processing time. I believe that it puts your order at the end of the queue, rather than the front. Amazon's shipping system is very automated, as in, computer-guided conveyor belts and stuff, so it's just a matter of telling the computer when to put your items in a box. Look up some video of Amazon's warehouses, quite an interesting place, with men and machines working at the same time.