True but it's a good performance metric, I hate 'pop' rap and 'gangster' rap and this visualisation exposes these 'rappers' for the repetitive drivel they spit with a 10 year olds vocab. Don't get me wrong, their music appeals to the masses so obviously some people must find it good, but a lot of people watch The only way is Essex too which is pretty much the same concept.
When you combine intelligence with flow and dope lyrics you get some immense albums, which is why you see so many of the Wu at the top.
What's I find most interesting though is that in his solo stuff Raekwon is the lowest but in the collabs he's the most diverse. Saving all his good stuff for the Wu tang albums and using the stuff left over for his solo albums? It's the opposite of GZA.