The plastic bins are "technically" just as bad, however, the plastic also allows for modifications.
Many here(and they should) drill extra ventilation holes along the sides of the bins, and some drill huge holes to connect to another bin, giving the hedgie more space.
With an aquarium, you're stuck, and you can't do anything like drilling holes to make the ventilation any better.
People here just suggest the bins for those who are dead set on using aquariums or "have no money to buy another cage", as the bins are much cheaper.
I'm pretty sure there's a thread on this....somewhere....
EDIT: Here's one