| Kokujin vs Jin | 16–32 | 33.33% |
| Kokujin vs King | 14–16 | 46.67% |
| Kokujin vs Steve | 15–10 | 60.00% |
| Kokujin vs Lili | 7–18 | 28.00% |
| Kokujin vs Hwoarang | 9–15 | 37.50% |
| Kokujin vs Reina | 11–13 | 45.83% |
| Kokujin vs Heihachi | 5–19 | 20.83% |
| Kokujin vs Lars | 8–14 | 36.36% |
| Kokujin vs Kazuya | 6–15 | 28.57% |
| Kokujin vs Azucena | 5–16 | 23.81% |
| Kokujin vs Miary Zo | 5–16 | 23.81% |
| Kokujin vs Law | 5–15 | 25.00% |
| Kokujin vs Dragunov | 7–12 | 36.84% |
| Kokujin vs Eddy | 9–9 | 50.00% |
| Kokujin vs Armor King | 4–13 | 23.53% |
| Kokujin vs Lee | 7–8 | 46.67% |
| Kokujin vs Claudio | 5–8 | 38.46% |
| Kokujin vs Victor | 4–9 | 30.77% |
| Kokujin vs Fahkumram | 5–8 | 38.46% |
| Kokujin vs Jun | 2–10 | 16.67% |
| Kokujin vs Leroy | 2–8 | 20.00% |
| Kokujin vs Bryan | 6–3 | 66.67% |
| Kokujin vs Jack-8 | 1–7 | 12.50% |
| Kokujin vs Zafina | 2–6 | 25.00% |
| Kokujin vs Lidia | 6–2 | 75.00% |
| Kokujin vs Yoshimitsu | 2–5 | 28.57% |
| Kokujin vs Alisa | 0–6 | 0.00% |
| Kokujin vs Paul | 1–4 | 20.00% |
| Kokujin vs Asuka | 1–4 | 20.00% |
| Kokujin vs Clive | 3–2 | 60.00% |
| Kokujin vs Leo | 1–3 | 25.00% |
| Kokujin vs Nina | 1–3 | 25.00% |
| Kokujin vs Xiaoyu | 2–1 | 66.67% |
| Kokujin vs Devil Jin | 0–3 | 0.00% |
| Kokujin vs Kuma | 1–2 | 33.33% |
| Kokujin vs Shaheen | 2–0 | 100.00% |
| Kokujin vs Anna | 0–2 | 0.00% |
| Kokujin vs Feng | 0–1 | 0.00% |
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.