To be fair I think that holds true for a lot of their albums - some impressive highs but their albums aren't generally massively consistent. On the other hand I can listen to pretty much any album of theirs beyond this point without getting bored, which is not something I can say for Virgin Killer (or its predecessors).I would not say it's a masterpiece, but I think this album is a bit better than these reviews indicate. Though we can all agree that Hell-Cat is unquestionably a steaming turd of a song.
The Scorps of this era were good for a couple excellent songs per album and quite a bit of filler (or worse). Not sure if comps are going to be covered in this thread, but I play my Best of Scorpions album (which covers the Uli era and does not contain any of the later big commercial hits) a lot more than any individual Uli-era album.