if you think it can't be proven why become involved in a discussion about whether it is or not?
Because, for some strange reason, you're trying to do it anyway
Moreover, the use of sales numbers as a referendum on quality is precisely why some think the band has completely lost their touch. I see All That...
and How to...
as formulaic retreads designed to reach the lowest common denominator, because, for some inexplicable reason, acceptance became more important to the band than honesty. (Yes, that is an opinion, and I don't need it to be any more than that.)
edit: oh and most loved is not the same as saying something is better or best. best album is a personal opinion. if you were to say "considered best album by the most people" then we'd be getting to the point where you could have a go at quantifying it and sales would be a way to do it.
I find it very hard to believe that anyone could be so hopelessly dense as to not realize that ANY qualitative judgment of art is an opinion. "Best," "worst," "most loved," "least loved," "relevant," "irrelevant" are all words that describe opinions and nothing more.
I cannot imagine the mental gymnastics that must be taking place in the minds of those who think these absurd claims are rational.