| KOTAROU vs Dragunov | 14–7 | 66.67% |
| KOTAROU vs Kazuya | 11–6 | 64.71% |
| KOTAROU vs Paul | 10–5 | 66.67% |
| KOTAROU vs Reina | 8–7 | 53.33% |
| KOTAROU vs Asuka | 11–3 | 78.57% |
| KOTAROU vs Jin | 8–5 | 61.54% |
| KOTAROU vs Lili | 5–8 | 38.46% |
| KOTAROU vs Yoshimitsu | 5–5 | 50.00% |
| KOTAROU vs Feng | 8–2 | 80.00% |
| KOTAROU vs Nina | 4–6 | 40.00% |
| KOTAROU vs Bryan | 3–6 | 33.33% |
| KOTAROU vs Devil Jin | 5–4 | 55.56% |
| KOTAROU vs Lars | 3–6 | 33.33% |
| KOTAROU vs Hwoarang | 8–0 | 100.00% |
| KOTAROU vs Jun | 6–2 | 75.00% |
| KOTAROU vs Eddy | 1–7 | 12.50% |
| KOTAROU vs Law | 3–4 | 42.86% |
| KOTAROU vs Shaheen | 2–4 | 33.33% |
| KOTAROU vs Azucena | 4–2 | 66.67% |
| KOTAROU vs Raven | 5–1 | 83.33% |
| KOTAROU vs King | 4–1 | 80.00% |
| KOTAROU vs Steve | 2–3 | 40.00% |
| KOTAROU vs Leo | 5–0 | 100.00% |
| KOTAROU vs Claudio | 4–1 | 80.00% |
| KOTAROU vs Jack-8 | 4–0 | 100.00% |
| KOTAROU vs Leroy | 1–3 | 25.00% |
| KOTAROU vs Zafina | 2–1 | 66.67% |
| KOTAROU vs Kuma | 2–0 | 100.00% |
| KOTAROU vs Panda | 2–0 | 100.00% |
| KOTAROU vs Victor | 1–1 | 50.00% |
| KOTAROU vs Xiaoyu | 1–0 | 100.00% |
| KOTAROU vs Alisa | 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.