Hi,
Imagine an axis. At one end is Mad Max -- it's an action movie but is still rather "realistic" for all that. No one has any super-powers it's all gun-fights and car chases and the endless outback. At the other end is Gamma World (1st ed.). Crazy powers, mutant animals, super high-tech stuff next to (essentially) magic.
As written, AW seems to lie not even on the midpoint but a little closer towards the Mad Max end of things. Everyone is human, the psi powers are pretty subtle and internal, and it's got a gritty feel.
In play, how weird does it get? Does the gonzo knob go to Q and what happens to the game as it ratchets up in that direction?
later
Tom