| Kosuki vs Jin | 13–7 | 65.00% |
| Kosuki vs Kazuya | 12–8 | 60.00% |
| Kosuki vs Hwoarang | 11–8 | 57.89% |
| Kosuki vs Eddy | 6–12 | 33.33% |
| Kosuki vs Jun | 9–7 | 56.25% |
| Kosuki vs Bryan | 6–9 | 40.00% |
| Kosuki vs Dragunov | 9–6 | 60.00% |
| Kosuki vs Steve | 7–5 | 58.33% |
| Kosuki vs King | 6–5 | 54.55% |
| Kosuki vs Feng | 5–6 | 45.45% |
| Kosuki vs Lili | 7–4 | 63.64% |
| Kosuki vs Nina | 5–6 | 45.45% |
| Kosuki vs Asuka | 6–4 | 60.00% |
| Kosuki vs Reina | 8–2 | 80.00% |
| Kosuki vs Paul | 4–5 | 44.44% |
| Kosuki vs Law | 2–6 | 25.00% |
| Kosuki vs Victor | 6–2 | 75.00% |
| Kosuki vs Leroy | 2–4 | 33.33% |
| Kosuki vs Azucena | 4–2 | 66.67% |
| Kosuki vs Jack-8 | 4–1 | 80.00% |
| Kosuki vs Devil Jin | 3–2 | 60.00% |
| Kosuki vs Alisa | 3–2 | 60.00% |
| Kosuki vs Lee | 2–3 | 40.00% |
| Kosuki vs Yoshimitsu | 3–1 | 75.00% |
| Kosuki vs Xiaoyu | 2–2 | 50.00% |
| Kosuki vs Lars | 2–2 | 50.00% |
| Kosuki vs Shaheen | 4–0 | 100.00% |
| Kosuki vs Leo | 1–0 | 100.00% |
| Kosuki vs Claudio | 1–0 | 100.00% |
| Kosuki vs Kuma | 1–0 | 100.00% |
| Kosuki 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.