What is wrong with League of Graphs?

League of Graphs has Courage of the Colossus as Jungle Rumble's highest win rate keystone in every single division. http://www.leagueofgraphs.com/champions/masteries/rumble/jungle/diamond http://www.leagueofgraphs.com/champions/masteries/rumble/jungle/platinum http://www.leagueofgraphs.com/champions/masteries/rumble/jungle http://www.leagueofgraphs.com/champions/masteries/rumble/jungle/silver http://www.leagueofgraphs.com/champions/masteries/rumble/jungle/bronze This makes no sense, as Rumble has no hard cc in his kit.

Champion.gg has Thunderlords as the highest win rate. http://champion.gg/champion/Rumble/Jungle

On ProBuilds, I found 6 Rumble Jungle games. Wins Deathfire: http://www.probuilds.net/guide/show/EUW/2943841420/27550839 Deathfire: http://www.probuilds.net/guide/show/KR/2639571031/13965344 Deathfire: http://www.probuilds.net/guide/show/BR/931606782/1838049

Loses Deathfire: http://www.probuilds.net/guide/show/NA/2349150326/138243 Deathfire: http://www.probuilds.net/guide/show/KR/2623407967/23064588 Thunderlords: http://www.probuilds.net/guide/show/KR/2632551804/4661845

League of Graphs also says that Platinum Rumble Jungle has a 52.5% win rate (54.5% in Diamond) while Champion.gg has it at 48.59% in Platinum+.

I could understand if maybe they update at different times, but that seems like quite a drastic change in win rates.