Basically Nath, this isn't your average watercooling system with a few bog standard radiators hanging off the back with some fans.
The loop is in a way divided into two, but it cools the same throughout the loop, hence why the cpu and gpu have the same temps.
The coolit box
Freezone CPU Cooler - CoolIT Systems cools one part of the loop - the cpu and mosfets and i think the northbridge. This goes back to a Y splitter into one to go back to the reservoir which is the clear plastic box you can see at the front.
The second half of the loop goes thru the black radiator at the back with a fan on it, and tht half of the loop goes through the graphics and the southbridge. Which then returns to the Y splitter as before into one and on to the Reservoir.
Make sense? Lol
Roz