Yes, the sky is blue. What shade? what's the gradient? what factors affect it? what causes a staggeringly "sky blue" color as opposed to blue-tinted overcast? how does looking thru a projected shadow affect what's seen? I had an art teacher point out that the lesson on painting landscapes included explaining to kids that the sky comes all the way down to the horizon, something that startled most of them.
Yes, you know. How well?
Except that the actual scores used to make this "objective" analysis are largely subjective.
a) formalizing of the concept of dissapointing (the particular statistical method they used), and
b) the particular list of albums they gave, using said method
Both things you didn't knew beforehand (and even if you did most didn't).