| Agent Kowalski vs King | 9–7 | 56.25% |
| Agent Kowalski vs Jin | 5–7 | 41.67% |
| Agent Kowalski vs Jack-8 | 6–5 | 54.55% |
| Agent Kowalski vs Law | 3–6 | 33.33% |
| Agent Kowalski vs Hwoarang | 5–3 | 62.50% |
| Agent Kowalski vs Steve | 7–1 | 87.50% |
| Agent Kowalski vs Azucena | 3–4 | 42.86% |
| Agent Kowalski vs Kazuya | 5–1 | 83.33% |
| Agent Kowalski vs Asuka | 5–1 | 83.33% |
| Agent Kowalski vs Xiaoyu | 1–4 | 20.00% |
| Agent Kowalski vs Victor | 3–2 | 60.00% |
| Agent Kowalski vs Paul | 0–4 | 0.00% |
| Agent Kowalski vs Lili | 3–1 | 75.00% |
| Agent Kowalski vs Leroy | 3–1 | 75.00% |
| Agent Kowalski vs Eddy | 3–1 | 75.00% |
| Agent Kowalski vs Bryan | 0–3 | 0.00% |
| Agent Kowalski vs Alisa | 1–2 | 33.33% |
| Agent Kowalski vs Claudio | 2–1 | 66.67% |
| Agent Kowalski vs Reina | 3–0 | 100.00% |
| Agent Kowalski vs Feng | 0–2 | 0.00% |
| Agent Kowalski vs Leo | 2–0 | 100.00% |
| Agent Kowalski vs Kuma | 0–2 | 0.00% |
| Agent Kowalski vs Jun | 2–0 | 100.00% |
| Agent Kowalski vs Dragunov | 1–0 | 100.00% |
| Agent Kowalski vs Lars | 1–0 | 100.00% |
| Agent Kowalski vs Lee | 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.