| Kowczacz vs Kazuya | 3–8 | 27.27% |
| Kowczacz vs King | 6–4 | 60.00% |
| Kowczacz vs Reina | 2–5 | 28.57% |
| Kowczacz vs Hwoarang | 1–5 | 16.67% |
| Kowczacz vs Paul | 4–1 | 80.00% |
| Kowczacz vs Xiaoyu | 2–3 | 40.00% |
| Kowczacz vs Jin | 3–2 | 60.00% |
| Kowczacz vs Steve | 5–0 | 100.00% |
| Kowczacz vs Feng | 1–4 | 20.00% |
| Kowczacz vs Jun | 2–3 | 40.00% |
| Kowczacz vs Victor | 5–0 | 100.00% |
| Kowczacz vs Clive | 2–3 | 40.00% |
| Kowczacz vs Bryan | 2–2 | 50.00% |
| Kowczacz vs Dragunov | 2–2 | 50.00% |
| Kowczacz vs Anna | 0–4 | 0.00% |
| Kowczacz vs Lili | 0–3 | 0.00% |
| Kowczacz vs Leo | 2–1 | 66.67% |
| Kowczacz vs Eddy | 1–2 | 33.33% |
| Kowczacz vs Yoshimitsu | 0–2 | 0.00% |
| Kowczacz vs Devil Jin | 2–0 | 100.00% |
| Kowczacz vs Lars | 0–2 | 0.00% |
| Kowczacz vs Nina | 0–2 | 0.00% |
| Kowczacz vs Kuma | 0–2 | 0.00% |
| Kowczacz vs Heihachi | 0–2 | 0.00% |
| Kowczacz vs Jack-8 | 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.