| Kouji vs King | 6–12 | 33.33% |
| Kouji vs Steve | 9–8 | 52.94% |
| Kouji vs Hwoarang | 4–11 | 26.67% |
| Kouji vs Kazuya | 3–10 | 23.08% |
| Kouji vs Eddy | 2–9 | 18.18% |
| Kouji vs Armor King | 1–8 | 11.11% |
| Kouji vs Yoshimitsu | 3–5 | 37.50% |
| Kouji vs Azucena | 3–4 | 42.86% |
| Kouji vs Lili | 0–6 | 0.00% |
| Kouji vs Reina | 4–2 | 66.67% |
| Kouji vs Lidia | 2–4 | 33.33% |
| Kouji vs Jin | 1–4 | 20.00% |
| Kouji vs Nina | 1–4 | 20.00% |
| Kouji vs Miary Zo | 3–2 | 60.00% |
| Kouji vs Victor | 2–2 | 50.00% |
| Kouji vs Xiaoyu | 1–2 | 33.33% |
| Kouji vs Dragunov | 1–2 | 33.33% |
| Kouji vs Lee | 3–0 | 100.00% |
| Kouji vs Paul | 0–2 | 0.00% |
| Kouji vs Law | 0–2 | 0.00% |
| Kouji vs Bryan | 0–2 | 0.00% |
| Kouji vs Asuka | 0–2 | 0.00% |
| Kouji vs Feng | 0–2 | 0.00% |
| Kouji vs Lars | 1–1 | 50.00% |
| Kouji vs Alisa | 0–2 | 0.00% |
| Kouji vs Jun | 0–2 | 0.00% |
| Kouji vs Heihachi | 2–0 | 100.00% |
| Kouji vs Clive | 2–0 | 100.00% |
| Kouji vs Devil Jin | 0–1 | 0.00% |
| Kouji vs Leroy | 0–1 | 0.00% |
| Kouji vs Raven | 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.