| Kowappa ga vs Reina | 11–13 | 45.83% |
| Kowappa ga vs Paul | 17–4 | 80.95% |
| Kowappa ga vs Bryan | 10–11 | 47.62% |
| Kowappa ga vs Devil Jin | 12–9 | 57.14% |
| Kowappa ga vs Kazuya | 13–7 | 65.00% |
| Kowappa ga vs Steve | 11–9 | 55.00% |
| Kowappa ga vs Dragunov | 10–8 | 55.56% |
| Kowappa ga vs King | 13–4 | 76.47% |
| Kowappa ga vs Jin | 16–1 | 94.12% |
| Kowappa ga vs Asuka | 14–2 | 87.50% |
| Kowappa ga vs Hwoarang | 4–9 | 30.77% |
| Kowappa ga vs Lars | 9–4 | 69.23% |
| Kowappa ga vs Eddy | 8–4 | 66.67% |
| Kowappa ga vs Shaheen | 5–6 | 45.45% |
| Kowappa ga vs Victor | 5–5 | 50.00% |
| Kowappa ga vs Heihachi | 5–5 | 50.00% |
| Kowappa ga vs Anna | 6–4 | 60.00% |
| Kowappa ga vs Fahkumram | 5–5 | 50.00% |
| Kowappa ga vs Lili | 7–2 | 77.78% |
| Kowappa ga vs Armor King | 2–7 | 22.22% |
| Kowappa ga vs Yoshimitsu | 4–4 | 50.00% |
| Kowappa ga vs Claudio | 8–0 | 100.00% |
| Kowappa ga vs Clive | 3–5 | 37.50% |
| Kowappa ga vs Miary Zo | 5–3 | 62.50% |
| Kowappa ga vs Law | 6–1 | 85.71% |
| Kowappa ga vs Leo | 5–2 | 71.43% |
| Kowappa ga vs Lee | 3–4 | 42.86% |
| Kowappa ga vs Lidia | 4–3 | 57.14% |
| Kowappa ga vs Alisa | 2–4 | 33.33% |
| Kowappa ga vs Xiaoyu | 2–3 | 40.00% |
| Kowappa ga vs Jack-8 | 3–2 | 60.00% |
| Kowappa ga vs Azucena | 3–2 | 60.00% |
| Kowappa ga vs Kuma | 2–2 | 50.00% |
| Kowappa ga vs Raven | 2–2 | 50.00% |
| Kowappa ga vs Zafina | 1–2 | 33.33% |
| Kowappa ga vs Nina | 0–2 | 0.00% |
| Kowappa ga vs Feng | 1–0 | 100.00% |
| Kowappa ga vs Panda | 1–0 | 100.00% |
| Kowappa ga vs Leroy | 1–0 | 100.00% |
| Kowappa ga vs Jun | 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.