I've not read the whole thread, so I may be off topic now or repeat what has already been written, sorry in case.
I think specs can give us an idea on 'how it sounds' but just an idea, a hint. That's due to several reasons, going from the reliability and completeness of the specs to one's capability of fully understand the specs themselves, and passing through a nebulosa of factors I don't now but which may give a 'model' its peculiar voice(employed materials, constructive solutions, proprietary patents not unveiled yet... a factor I could call undeclared specs) .
A skilled technician or a competent hifi enthusiast may guess much of the sound of a system by just reading the specs of all the components; I can't believe, though, that he could EXACTLY and COMPLETELY imagine (like hearing in his mind) the sound in all it's shades, subtelties, the exact amount of crispiness, of slam, dynamics, harshness...
and nuances and subtle differences are often what this is all about.