Read moreThe issue with the underlying point is that your entire argument only holds up based on the global data that is scewed towards EUW and NA. If we look just at the Korean server, your argument falls flat, since Rumble jungle winrate is actually high and continues to go up with ranks. Considering the initial point was that western teams and western players in general are behind on the pick, it actually supports the argument of LS and IWD.
Another thing, even though mid Rumble in Korea has slightly higher winrates, the amount of games is significantly lower, i.e. on u.gg there ~560 mid Rumble games and ~2900 jungle Rumble games tracked in dia2+(cumulative 11.9 and 11.10). So it is kinda expected that a lower pick rate would inflate winrate, it's a rather common occurrence. However, if you still want to use it to say that Rumble is not a jungler because his winrate is somewhat lower than in mid, you'd still be wrong - if a champion has 52%+ wr in both roles, I'd say it's good ...
Ooh, that's a good point, but also unsupported by data.
- Korean Rumble's Mid minus Jungle win rate in bronze: +1.14.
- Korean Rumble's Mid minus Jungle win rate in Master+: +3.12
Now I'll grant you that if you slice the data down far enough until you find data that supports you, you can eventually find data that starts to close the gap, but then you get a host of new issues. For example, there were under 500 games of Rumble mid in master+ Korean solo queue over the last two weeks. If we're going to debate 1-2% win rate shifts as indicative of champion performance, that's not enough samples to support those claims. You also have metagame issues that aren't relevant to pro play.
See, Korean solo queue is rife with early surrenders. Over the last two weeks in master+ Rumble jungle games, Korean solo queue had 23.25% of games end in 15-20 minute surrenders and another 33.23% end pre-25. Worldwide for the same skill bracket and time, it was 15....
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