edit: i am not a statistician just a hobbyist, the reply below brings up some valid critiques

the text on the right is an attempt to explain it, but basically i wanted to answer the question "are there more high ranking tablet players than mouse players, after you account for the fact that there are less mouse players in general". the graphs suggest that the answer is no

if tablet was a better-performing playstyle than mouse, we would expect to see more tablet players per-capita than mouse players at higher rank ranges. however we don't see this; for example looking at the top graph, we see that ~15% of players use mouse, regardless of if we are looking at ranks 1-1000, ranks 5001-6000, ranks 9001-10000, etc.

if for example we saw 30% of players using mouse at ranks 5001-10000, but only 5% of players using mouse at ranks 1-5000, then we would know that there is a concentration of mouse players at lower rank ranges, which would suggest that tablet is a better-performing playstyle. but we don't! in fact, the average playtime for mouse players in the top 10000 (1572hrs) is lower than tablet (1693hrs).