AFD is probably the best debut album by any rock band, ever. Period.
Eh, I could name dozens that are better.
In hard rock alone, the debuts of LZ, Boston and VH smack the shit out of Appetite.
I would say AFD is in that league.
I would not.
Consider the test of time theory in regards to radio play (which I am aware is not everything, but it's just interesting to note):
Where I work now, we listen to the radio all day, and usually a station that plays rock from the late 60s through current day.
AFD has three songs that still get played on the radio regularly, the three hits. Mr. Brownstone gets the occasional play.
Boston's first album has eight songs that are ALL still played on the radio on a regular basis.
The first VH album still has five songs that get played to death (six if you count Eruption, which is often played along with You Really Got Me).
Now, the first LZ album probably only has three songs that still get played a lot, but I don't think anyone in their right mind is going to argue against the greatness that is Led Zeppelin I, right?