| Ruka vs Kazuya | 39–23 | 62.90% |
| Ruka vs King | 29–20 | 59.18% |
| Ruka vs Paul | 24–24 | 50.00% |
| Ruka vs Dragunov | 32–15 | 68.09% |
| Ruka vs Victor | 18–28 | 39.13% |
| Ruka vs Bryan | 18–23 | 43.90% |
| Ruka vs Reina | 22–19 | 53.66% |
| Ruka vs Hwoarang | 24–16 | 60.00% |
| Ruka vs Lili | 20–17 | 54.05% |
| Ruka vs Eddy | 15–19 | 44.12% |
| Ruka vs Azucena | 17–13 | 56.67% |
| Ruka vs Law | 19–9 | 67.86% |
| Ruka vs Jun | 18–8 | 69.23% |
| Ruka vs Jin | 16–8 | 66.67% |
| Ruka vs Devil Jin | 11–12 | 47.83% |
| Ruka vs Steve | 14–7 | 66.67% |
| Ruka vs Asuka | 16–5 | 76.19% |
| Ruka vs Leroy | 10–11 | 47.62% |
| Ruka vs Yoshimitsu | 8–11 | 42.11% |
| Ruka vs Jack-8 | 7–11 | 38.89% |
| Ruka vs Alisa | 11–7 | 61.11% |
| Ruka vs Nina | 7–11 | 38.89% |
| Ruka vs Feng | 7–8 | 46.67% |
| Ruka vs Xiaoyu | 7–7 | 50.00% |
| Ruka vs Armor King | 6–7 | 46.15% |
| Ruka vs Lars | 7–5 | 58.33% |
| Ruka vs Claudio | 5–6 | 45.45% |
| Ruka vs Lee | 4–6 | 40.00% |
| Ruka vs Leo | 6–3 | 66.67% |
| Ruka vs Kuma | 3–5 | 37.50% |
| Ruka vs Raven | 5–3 | 62.50% |
| Ruka vs Anna | 6–1 | 85.71% |
| Ruka vs Zafina | 2–4 | 33.33% |
| Ruka vs Lidia | 3–2 | 60.00% |
| Ruka vs Fahkumram | 1–2 | 33.33% |
| Ruka vs Panda | 0–2 | 0.00% |
| Ruka vs Clive | 0–2 | 0.00% |
| Ruka vs Shaheen | 0–1 | 0.00% |
| Ruka vs Heihachi | 1–0 | 100.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.