Oh come on. You cannot compare Sixx AM and Grinderman under the same genre they may be both considered "Rock" but they are completely different.

I love Nick Cave, but I'm not let down when Bon Jovi's latest album isn't written in the same way.

How could you EVER have expected a Sixx AM album to sound like this ???

Sure they all play the same instruments but it's not the same music

This is the equivalent of me saying  "This I Love is shit because it doesn't sound Like this":

Or saying that your bicycle is shit because it doesn't look like this:

These things are in the same broad category but WORLDS apart.

The best way to analyze it is by whether or not it achieved it's aims.

the aim was to make a better record than their first one with a somewhat sleaze/hard rock feel but dealing with issues arising from the book. Obviously to keep their fanbase happy too.

They did that. Very well. The music sounds great. They achieved exactly what their fan-base would have wanted from them. In fact they surpassed what most would have wanted from them.

This could go on forever,

"Heathen Child is shit this is how a modern rock song should sound like":

I think that's always been the way soundgarden works, Kim says no Chris says yes

He's just immature. Probably not a bad person just never grew up. Same can be said for many a famous rockstar

I think so, Josh Klinghofer I think he's called. He did some additional guitar with them live before I think so not so much a replacement as a promotion