| Kokubunji vs King | 30–41 | 42.25% |
| Kokubunji vs Jin | 23–41 | 35.94% |
| Kokubunji vs Armor King | 25–38 | 39.68% |
| Kokubunji vs Reina | 30–22 | 57.69% |
| Kokubunji vs Steve | 15–36 | 29.41% |
| Kokubunji vs Law | 23–27 | 46.00% |
| Kokubunji vs Dragunov | 28–17 | 62.22% |
| Kokubunji vs Lars | 19–26 | 42.22% |
| Kokubunji vs Hwoarang | 18–26 | 40.91% |
| Kokubunji vs Kazuya | 19–25 | 43.18% |
| Kokubunji vs Bryan | 15–26 | 36.59% |
| Kokubunji vs Heihachi | 17–17 | 50.00% |
| Kokubunji vs Lili | 13–20 | 39.39% |
| Kokubunji vs Azucena | 8–21 | 27.59% |
| Kokubunji vs Jun | 16–12 | 57.14% |
| Kokubunji vs Lidia | 13–13 | 50.00% |
| Kokubunji vs Xiaoyu | 10–15 | 40.00% |
| Kokubunji vs Leo | 13–12 | 52.00% |
| Kokubunji vs Yoshimitsu | 15–9 | 62.50% |
| Kokubunji vs Asuka | 8–16 | 33.33% |
| Kokubunji vs Victor | 14–10 | 58.33% |
| Kokubunji vs Eddy | 11–13 | 45.83% |
| Kokubunji vs Lee | 10–12 | 45.45% |
| Kokubunji vs Paul | 9–12 | 42.86% |
| Kokubunji vs Raven | 11–10 | 52.38% |
| Kokubunji vs Clive | 10–10 | 50.00% |
| Kokubunji vs Leroy | 6–12 | 33.33% |
| Kokubunji vs Feng | 6–11 | 35.29% |
| Kokubunji vs Fahkumram | 10–7 | 58.82% |
| Kokubunji vs Nina | 7–9 | 43.75% |
| Kokubunji vs Jack-8 | 7–8 | 46.67% |
| Kokubunji vs Devil Jin | 8–6 | 57.14% |
| Kokubunji vs Anna | 6–7 | 46.15% |
| Kokubunji vs Alisa | 6–6 | 50.00% |
| Kokubunji vs Claudio | 3–6 | 33.33% |
| Kokubunji vs Kuma | 4–4 | 50.00% |
| Kokubunji vs Shaheen | 3–4 | 42.86% |
| Kokubunji vs Zafina | 4–2 | 66.67% |
| Kokubunji vs Panda | 1–3 | 25.00% |
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.