As to the first bit, the only reasons I can think of that might make pillow packs less nutritious than the 'natural' products is either if the industrial washing processes used somehow destroy vitamins (unlikely) or if the additional packing means that the pillow packs aren't quite as fresh. (Vitamins can degrade with time but it's unlikely that there would be much difference in the time taken to get the products to the shelves).
As to the second bit, if you're buying organic because of concerns for the environment then it makes sense to avoid organic product which use unnecessary packaging. If you're buying organic for better flavour or a more nutritious product then forget it. Every serious study ever made has shown that there are no benefits whatsoever, in terms of flavour or nutritional value, in buying organic.
Chris