Percentages and numbers are ridiculous; and as I said, it's impossible to quantify this kind of thing in general. However...when it's what we have, it's what we use. How else are you going to directly compare 2 speakers? As long as all understand the context of the argument, there's no reason for anyone to suppose what's really being suggested...is one speaker only delivers 60% of the sound of another. That is, unless you're deliberately trying to stir up sh*t
No more nonsensical than the ridiculous and silly drivel spewed by marketing types and placebo induced drone bees about pixie dust cable or amp changes making a pair of speakers sound wildly different. But such drivel does admittedly provide for some comic relief. LOL
Tata Salad - no cure for stupid, none.