I think that the pockets on the zoom are much much MUCH better organized. There is literally a pocket for everything.
The camera block in the zoom is better arranged to fit goods and what not. The oversized water bottle holder is amazing. There are also two hidden-ish pockets next to the waterbottle holder as well as side pouch that run the length of the backpack. The sequence pockets are much smaller.
Right now, I have my gripped xti, 24-70, kit lens, 50mm, random gadgets and some foam stuffed in the camera block, with 2 notebooks, a planner, novel, my laptop and a scarf in the main part with a waterbottle on the side, my power cord and wireless mouse on the side pouch, highlighters, ipod, headphones and pens in the top thin pouch, and cologne, deodorant and a toothbrush in the top pouch (where the cell phone is on the link) and its not too heavy.
Sorry I haven't posted pictures, I'm tending to my sick gf.