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Explain this to me
The page shows a hero's winrates against certain enemies, as well as winrate advantage (difference in winrate compared to overall value). Higher rank and winrate mean opponent is easier for the hero, higher R-Rank means opponent is picked often and is less effective against the hero.
| Hero | Matches | Winrate | |
|---|---|---|---|
 | Io | 28 | 57.14% |
| Opponent | Rank | Rev-Rank | Winrate | Advantage | Matches | Won | Lost | |
|---|---|---|---|---|---|---|---|---|
 | Lich | 100.00 | 40.63 | 83.33% | 26.19% | 6 | 5 | 1 |
 | Mars | 98.44 | 6.25 | 100.00% | 42.86% | 3 | 3 | 0 |
 | Grimstroke | 98.44 | 6.25 | 100.00% | 42.86% | 3 | 3 | 0 |
 | Lifestealer | 98.44 | 6.25 | 100.00% | 42.86% | 3 | 3 | 0 |
 | Troll Warlord | 98.44 | 6.25 | 100.00% | 42.86% | 3 | 3 | 0 |
 | Doom | 92.19 | 54.69 | 66.67% | 9.53% | 6 | 4 | 2 |
 | Void Spirit | 90.63 | 42.19 | 75.00% | 17.86% | 4 | 3 | 1 |
 | Morphling | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Viper | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Nyx Assassin | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Invoker | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Underlord | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Bloodseeker | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Puck | 89.06 | 35.94 | 100.00% | 42.86% | 2 | 2 | 0 |
 | Winter Wyvern | 78.13 | 87.50 | 57.14% | 0.00% | 7 | 4 | 3 |
 | Templar Assassin | 76.56 | 57.81 | 60.00% | 2.86% | 5 | 3 | 2 |
 | Snapfire | 76.56 | 57.81 | 60.00% | 2.86% | 5 | 3 | 2 |
 | Windranger | 73.44 | 46.88 | 66.67% | 9.53% | 3 | 2 | 1 |
 | Tusk | 73.44 | 46.88 | 66.67% | 9.53% | 3 | 2 | 1 |
 | Omniknight | 73.44 | 46.88 | 66.67% | 9.53% | 3 | 2 | 1 |
 | Batrider | 68.75 | 85.94 | 50.00% | -7.14% | 4 | 2 | 2 |
 | Phantom Lancer | 68.75 | 85.94 | 50.00% | -7.14% | 4 | 2 | 2 |
 | Elder Titan | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Ogre Magi | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Brewmaster | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Outworld Destroyer | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Sven | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Ancient Apparition | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Dark Willow | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Jakiro | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Lina | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Huskar | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Oracle | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Nature's Prophet | 65.63 | 25.00 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Vengeful Spirit | 65.63 | 39.06 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Shadow Shaman | 65.63 | 39.06 | 100.00% | 42.86% | 1 | 1 | 0 |
 | Abaddon | 43.75 | 53.13 | 50.00% | -7.14% | 2 | 1 | 1 |
 | Witch Doctor | 43.75 | 53.13 | 50.00% | -7.14% | 2 | 1 | 1 |
 | Clockwerk | 43.75 | 53.13 | 50.00% | -7.14% | 2 | 1 | 1 |
 | Shadow Fiend | 43.75 | 53.13 | 50.00% | -7.14% | 2 | 1 | 1 |
 | Slardar | 37.50 | 89.06 | 33.33% | -23.81% | 3 | 1 | 2 |
 | Disruptor | 35.94 | 96.88 | 25.00% | -32.14% | 4 | 1 | 3 |
 | Slark | 35.94 | 96.88 | 25.00% | -32.14% | 4 | 1 | 3 |
 | Ember Spirit | 35.94 | 96.88 | 25.00% | -32.14% | 4 | 1 | 3 |
 | Monkey King | 31.25 | 92.19 | 0.00% | -57.14% | 2 | 0 | 2 |
 | Legion Commander | 29.69 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Arc Warden | 29.69 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Axe | 29.69 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Timbersaw | 29.69 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Magnus | 29.69 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Medusa | 29.69 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Rubick | 20.31 | 100.00 | 0.00% | -57.14% | 4 | 0 | 4 |
 | Undying | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Treant Protector | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Bane | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Enchantress | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Leshrac | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Venomancer | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Riki | 18.75 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Tiny | 7.81 | 92.19 | 0.00% | -57.14% | 2 | 0 | 2 |
 | Earthshaker | 6.25 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Drow Ranger | 6.25 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Chen | 6.25 | 82.81 | 0.00% | -57.14% | 1 | 0 | 1 |
 | Razor | 1.56 | 98.44 | 0.00% | -57.14% | 3 | 0 | 3 |