| Koumori vs Eddy | 9–19 | 32.14% |
| Koumori vs Jin | 10–9 | 52.63% |
| Koumori vs Hwoarang | 9–9 | 50.00% |
| Koumori vs King | 8–8 | 50.00% |
| Koumori vs Reina | 11–5 | 68.75% |
| Koumori vs Law | 8–4 | 66.67% |
| Koumori vs Feng | 8–4 | 66.67% |
| Koumori vs Dragunov | 7–5 | 58.33% |
| Koumori vs Steve | 7–4 | 63.64% |
| Koumori vs Bryan | 7–3 | 70.00% |
| Koumori vs Xiaoyu | 5–4 | 55.56% |
| Koumori vs Kazuya | 5–4 | 55.56% |
| Koumori vs Devil Jin | 3–6 | 33.33% |
| Koumori vs Leo | 9–0 | 100.00% |
| Koumori vs Jun | 5–4 | 55.56% |
| Koumori vs Paul | 4–4 | 50.00% |
| Koumori vs Victor | 4–4 | 50.00% |
| Koumori vs Raven | 5–3 | 62.50% |
| Koumori vs Lars | 6–1 | 85.71% |
| Koumori vs Azucena | 4–3 | 57.14% |
| Koumori vs Yoshimitsu | 4–2 | 66.67% |
| Koumori vs Jack-8 | 1–3 | 25.00% |
| Koumori vs Asuka | 3–1 | 75.00% |
| Koumori vs Lili | 2–2 | 50.00% |
| Koumori vs Claudio | 1–2 | 33.33% |
| Koumori vs Shaheen | 1–2 | 33.33% |
| Koumori vs Nina | 1–2 | 33.33% |
| Koumori vs Kuma | 3–0 | 100.00% |
| Koumori vs Alisa | 1–1 | 50.00% |
| Koumori vs Leroy | 0–2 | 0.00% |
| Koumori vs Lee | 0–1 | 0.00% |
| Koumori vs Panda | 1–0 | 100.00% |
| Koumori vs Zafina | 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.