| Koss12 vs Clive | 16–17 | 48.48% |
| Koss12 vs King | 17–8 | 68.00% |
| Koss12 vs Law | 15–8 | 65.22% |
| Koss12 vs Bryan | 9–9 | 50.00% |
| Koss12 vs Kazuya | 7–10 | 41.18% |
| Koss12 vs Dragunov | 8–8 | 50.00% |
| Koss12 vs Paul | 8–7 | 53.33% |
| Koss12 vs Hwoarang | 6–8 | 42.86% |
| Koss12 vs Asuka | 9–5 | 64.29% |
| Koss12 vs Jun | 5–9 | 35.71% |
| Koss12 vs Reina | 5–8 | 38.46% |
| Koss12 vs Nina | 8–4 | 66.67% |
| Koss12 vs Eddy | 6–5 | 54.55% |
| Koss12 vs Heihachi | 5–6 | 45.45% |
| Koss12 vs Jin | 5–5 | 50.00% |
| Koss12 vs Steve | 5–5 | 50.00% |
| Koss12 vs Lili | 4–5 | 44.44% |
| Koss12 vs Leo | 2–6 | 25.00% |
| Koss12 vs Zafina | 7–1 | 87.50% |
| Koss12 vs Azucena | 3–5 | 37.50% |
| Koss12 vs Yoshimitsu | 7–0 | 100.00% |
| Koss12 vs Lee | 4–3 | 57.14% |
| Koss12 vs Victor | 3–4 | 42.86% |
| Koss12 vs Feng | 1–4 | 20.00% |
| Koss12 vs Lars | 3–2 | 60.00% |
| Koss12 vs Alisa | 5–0 | 100.00% |
| Koss12 vs Raven | 3–2 | 60.00% |
| Koss12 vs Lidia | 2–3 | 40.00% |
| Koss12 vs Devil Jin | 2–2 | 50.00% |
| Koss12 vs Xiaoyu | 1–2 | 33.33% |
| Koss12 vs Shaheen | 1–2 | 33.33% |
| Koss12 vs Jack-8 | 2–0 | 100.00% |
| Koss12 vs Claudio | 0–2 | 0.00% |
| Koss12 vs Kuma | 1–0 | 100.00% |
| Koss12 vs Leroy | 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.