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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 | 20 | 55.00% |
| Opponent | Rank | Rev-Rank | Winrate | Advantage | Matches | Won | Lost | |
|---|---|---|---|---|---|---|---|---|
 | Slark | 100.00 | 61.36 | 66.67% | 11.67% | 6 | 4 | 2 |
 | Earthshaker | 97.73 | 43.18 | 75.00% | 20.00% | 4 | 3 | 1 |
 | Broodmother | 95.45 | 38.64 | 100.00% | 45.00% | 2 | 2 | 0 |
 | Windranger | 95.45 | 38.64 | 100.00% | 45.00% | 2 | 2 | 0 |
 | Warlock | 95.45 | 38.64 | 100.00% | 45.00% | 2 | 2 | 0 |
 | Grimstroke | 95.45 | 38.64 | 100.00% | 45.00% | 2 | 2 | 0 |
 | Rubick | 95.45 | 38.64 | 100.00% | 45.00% | 2 | 2 | 0 |
 | Batrider | 95.45 | 38.64 | 100.00% | 45.00% | 2 | 2 | 0 |
 | Magnus | 81.82 | 63.64 | 60.00% | 5.00% | 5 | 3 | 2 |
 | Lifestealer | 79.55 | 47.73 | 66.67% | 11.67% | 3 | 2 | 1 |
 | Omniknight | 79.55 | 47.73 | 66.67% | 11.67% | 3 | 2 | 1 |
 | Puck | 75.00 | 75.00 | 50.00% | -5.00% | 4 | 2 | 2 |
 | Morphling | 75.00 | 75.00 | 50.00% | -5.00% | 4 | 2 | 2 |
 | Timbersaw | 70.45 | 40.91 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Underlord | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Dark Willow | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Lone Druid | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Shadow Demon | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Outworld Destroyer | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Crystal Maiden | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Bloodseeker | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Chen | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Mars | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Phantom Lancer | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Riki | 70.45 | 25.00 | 100.00% | 45.00% | 1 | 1 | 0 |
 | Treant Protector | 43.18 | 84.09 | 40.00% | -15.00% | 5 | 2 | 3 |
 | Lich | 43.18 | 84.09 | 40.00% | -15.00% | 5 | 2 | 3 |
 | Winter Wyvern | 38.64 | 100.00 | 33.33% | -21.67% | 6 | 2 | 4 |
 | Legion Commander | 36.36 | 59.09 | 50.00% | -5.00% | 2 | 1 | 1 |
 | Enchantress | 36.36 | 59.09 | 50.00% | -5.00% | 2 | 1 | 1 |
 | Templar Assassin | 36.36 | 59.09 | 50.00% | -5.00% | 2 | 1 | 1 |
 | Leshrac | 36.36 | 59.09 | 50.00% | -5.00% | 2 | 1 | 1 |
 | Naga Siren | 36.36 | 59.09 | 50.00% | -5.00% | 2 | 1 | 1 |
 | Disruptor | 25.00 | 79.55 | 33.33% | -21.67% | 3 | 1 | 2 |
 | Doom | 25.00 | 79.55 | 33.33% | -21.67% | 3 | 1 | 2 |
 | Enigma | 20.45 | 70.45 | 0.00% | -55.00% | 1 | 0 | 1 |
 | Nyx Assassin | 18.18 | 97.73 | 0.00% | -55.00% | 2 | 0 | 2 |
 | Ancient Apparition | 18.18 | 97.73 | 0.00% | -55.00% | 2 | 0 | 2 |
 | Faceless Void | 18.18 | 97.73 | 0.00% | -55.00% | 2 | 0 | 2 |
 | Slardar | 11.36 | 70.45 | 0.00% | -55.00% | 1 | 0 | 1 |
 | Tiny | 9.09 | 97.73 | 0.00% | -55.00% | 2 | 0 | 2 |
 | Silencer | 6.82 | 70.45 | 0.00% | -55.00% | 1 | 0 | 1 |
 | Razor | 4.55 | 97.73 | 0.00% | -55.00% | 2 | 0 | 2 |
 | Pangolier | 4.55 | 97.73 | 0.00% | -55.00% | 2 | 0 | 2 |