| kowalski vs Jin | 6–8 | 42.86% |
| kowalski vs Alisa | 1–12 | 7.69% |
| kowalski vs Steve | 2–9 | 18.18% |
| kowalski vs Victor | 3–8 | 27.27% |
| kowalski vs Anna | 2–9 | 18.18% |
| kowalski vs Xiaoyu | 3–7 | 30.00% |
| kowalski vs Leroy | 4–6 | 40.00% |
| kowalski vs Hwoarang | 6–3 | 66.67% |
| kowalski vs Lili | 1–8 | 11.11% |
| kowalski vs Leo | 2–7 | 22.22% |
| kowalski vs Reina | 5–4 | 55.56% |
| kowalski vs Fahkumram | 1–8 | 11.11% |
| kowalski vs Clive | 0–8 | 0.00% |
| kowalski vs King | 3–4 | 42.86% |
| kowalski vs Feng | 4–1 | 80.00% |
| kowalski vs Kuma | 0–5 | 0.00% |
| kowalski vs Armor King | 0–5 | 0.00% |
| kowalski vs Law | 2–2 | 50.00% |
| kowalski vs Yoshimitsu | 2–2 | 50.00% |
| kowalski vs Kazuya | 4–0 | 100.00% |
| kowalski vs Asuka | 0–4 | 0.00% |
| kowalski vs Dragunov | 2–2 | 50.00% |
| kowalski vs Shaheen | 2–2 | 50.00% |
| kowalski vs Paul | 1–2 | 33.33% |
| kowalski vs Bryan | 1–2 | 33.33% |
| kowalski vs Lee | 1–2 | 33.33% |
| kowalski vs Miary Zo | 0–3 | 0.00% |
| kowalski vs Raven | 2–0 | 100.00% |
| kowalski vs Nina | 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.