| Kouki vs King | 17–8 | 68.00% |
| Kouki vs Yoshimitsu | 14–11 | 56.00% |
| Kouki vs Kazuya | 9–12 | 42.86% |
| Kouki vs Hwoarang | 13–7 | 65.00% |
| Kouki vs Law | 6–12 | 33.33% |
| Kouki vs Steve | 10–7 | 58.82% |
| Kouki vs Reina | 10–5 | 66.67% |
| Kouki vs Lars | 8–6 | 57.14% |
| Kouki vs Jin | 6–7 | 46.15% |
| Kouki vs Alisa | 10–3 | 76.92% |
| Kouki vs Bryan | 1–10 | 9.09% |
| Kouki vs Azucena | 5–4 | 55.56% |
| Kouki vs Paul | 2–6 | 25.00% |
| Kouki vs Kuma | 3–4 | 42.86% |
| Kouki vs Eddy | 2–5 | 28.57% |
| Kouki vs Shaheen | 4–2 | 66.67% |
| Kouki vs Xiaoyu | 3–2 | 60.00% |
| Kouki vs Asuka | 3–2 | 60.00% |
| Kouki vs Claudio | 4–1 | 80.00% |
| Kouki vs Victor | 2–3 | 40.00% |
| Kouki vs Lili | 1–3 | 25.00% |
| Kouki vs Dragunov | 4–0 | 100.00% |
| Kouki vs Jack-8 | 1–2 | 33.33% |
| Kouki vs Zafina | 2–1 | 66.67% |
| Kouki vs Raven | 1–2 | 33.33% |
| Kouki vs Devil Jin | 0–2 | 0.00% |
| Kouki vs Lee | 2–0 | 100.00% |
| Kouki vs Lidia | 0–2 | 0.00% |
| Kouki vs Feng | 0–1 | 0.00% |
| Kouki vs Leroy | 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.