Agreed
But it all falls under the same bracket. Popularity is no indication of quality. You'll notice Monty didn't cite this argument, because he knows Dark Side of the Moon shifted a few units too.
(Darth Foxtrot A one-man army dedicated to making fetch happen, Mon 27 Jun 2011, 10:53, 2 replies, latest was 15 years ago)

AC-DC are still fucking ace though
LEAVE AC-DC ALONE! And anyway I haven't made a gay joke OR a hair joke towards you for ages, don't make me start!
( Peej, Mon 27 Jun 2011, 10:55, Reply)

Good point
I'm not retracting it but I'll drop it now
(Darth Foxtrot A one-man army dedicated to making fetch happen, Mon 27 Jun 2011, 11:04, Reply)

High sales usually indicate an absence of quality rather than the other way round.

( Monty Boyce, My cheese game is strong, Mon 27 Jun 2011, 10:57, Reply)

Except for Back in Black

( Peej, Mon 27 Jun 2011, 11:06, Reply)

It's an anomaly.
But then you think about the sales Led Zeppelin and The Who have had - every now and then the populace 'gets' someone decent...
( Monty Boyce, My cheese game is strong, Mon 27 Jun 2011, 11:13, Reply)