That was actually my initial thought for what I would test with a tool like this. How much does quality matter? Quality of course has many definitions, but in the light of this tool, the measurable quality could be "how much novel information does this video have?" I'd hope a trend that pops out is that content with more information around a focused topic would perform better. But as it is, I only have my personal preferences and my suggestions list (based on my personal preferences) to go by. I'm not a content creator myself, but if I was, I might find this kind of analysis interesting enough to pay for.