| Kouyama Mitsuki vs Eddy | 11–13 | 45.83% |
| Kouyama Mitsuki vs King | 15–4 | 78.95% |
| Kouyama Mitsuki vs Jin | 8–10 | 44.44% |
| Kouyama Mitsuki vs Steve | 12–5 | 70.59% |
| Kouyama Mitsuki vs Reina | 3–12 | 20.00% |
| Kouyama Mitsuki vs Xiaoyu | 7–2 | 77.78% |
| Kouyama Mitsuki vs Dragunov | 3–5 | 37.50% |
| Kouyama Mitsuki vs Azucena | 4–4 | 50.00% |
| Kouyama Mitsuki vs Lidia | 3–5 | 37.50% |
| Kouyama Mitsuki vs Asuka | 3–4 | 42.86% |
| Kouyama Mitsuki vs Lili | 6–1 | 85.71% |
| Kouyama Mitsuki vs Alisa | 1–6 | 14.29% |
| Kouyama Mitsuki vs Jun | 6–1 | 85.71% |
| Kouyama Mitsuki vs Kazuya | 0–5 | 0.00% |
| Kouyama Mitsuki vs Nina | 1–4 | 20.00% |
| Kouyama Mitsuki vs Lee | 0–5 | 0.00% |
| Kouyama Mitsuki vs Leroy | 3–2 | 60.00% |
| Kouyama Mitsuki vs Law | 2–2 | 50.00% |
| Kouyama Mitsuki vs Yoshimitsu | 2–2 | 50.00% |
| Kouyama Mitsuki vs Hwoarang | 1–3 | 25.00% |
| Kouyama Mitsuki vs Bryan | 2–2 | 50.00% |
| Kouyama Mitsuki vs Leo | 3–1 | 75.00% |
| Kouyama Mitsuki vs Lars | 0–4 | 0.00% |
| Kouyama Mitsuki vs Panda | 2–2 | 50.00% |
| Kouyama Mitsuki vs Zafina | 3–1 | 75.00% |
| Kouyama Mitsuki vs Raven | 1–3 | 25.00% |
| Kouyama Mitsuki vs Paul | 0–3 | 0.00% |
| Kouyama Mitsuki vs Devil Jin | 1–2 | 33.33% |
| Kouyama Mitsuki vs Feng | 0–2 | 0.00% |
| Kouyama Mitsuki vs Claudio | 2–0 | 100.00% |
| Kouyama Mitsuki vs Shaheen | 0–2 | 0.00% |
| Kouyama Mitsuki vs Kuma | 0–2 | 0.00% |
| Kouyama Mitsuki vs Victor | 2–0 | 100.00% |
| Kouyama Mitsuki vs Jack-8 | 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.