Paisiello fitting a certain culture is no more objective evidence than Paisiello being the greatest we've ever seen write music like Paisiello. This is due to there being no inherent value tied to either requirement, one must input their own, the subjective preference within either an individual or average framework dictating what is more valuable, no objectivity ever alluded. Now, more to the point of these heirarchies, many like myself define greatness as correlated to critical opinions within a whole field and time, but what's important to compare is also the more valuable art and life commodities of those not focused within a specific field. For instance, in music, play something by Grieg and it will often receive better reception than something by Bach, because people aren't focusing into the field. Michael Jackson and this appreciation draws even higher. Arriving at technical greatness begs the question within its circle, what music has been most studied and focused on among music scholars? The term befits one group with many opinions, sometimes dubbed audiophiles, but in order to claim one of their criticisms integrably, you must actually understand and enjoy it. This is why appeal to authority is generally meaningless, a real critic may find much personal overlap with the others, and influence, and some whose brain works differently may not. No one more objective and less objective is establishing fact. But the most invested of these opinions will generally be most interesting to study compared to one merely assuming these people are correct, one who offers no personal analysis and feeling of their own. So if it's a competition of credibility that wishes to be sparred, hammeredklavier already wins the contest before it started. One can disagree with him, yeah okay, or one can put forth their own substantial critique of a music that others might consider.