| Koisy vs Law | 6–4 | 60.00% |
| Koisy vs Feng | 8–1 | 88.89% |
| Koisy vs Victor | 8–1 | 88.89% |
| Koisy vs Yoshimitsu | 5–3 | 62.50% |
| Koisy vs Lili | 5–3 | 62.50% |
| Koisy vs Hwoarang | 3–3 | 50.00% |
| Koisy vs Xiaoyu | 3–3 | 50.00% |
| Koisy vs Alisa | 3–3 | 50.00% |
| Koisy vs Jin | 5–0 | 100.00% |
| Koisy vs Kazuya | 4–0 | 100.00% |
| Koisy vs Dragunov | 3–1 | 75.00% |
| Koisy vs Paul | 1–2 | 33.33% |
| Koisy vs Steve | 2–0 | 100.00% |
| Koisy vs Jack-8 | 1–1 | 50.00% |
| Koisy vs Lars | 2–0 | 100.00% |
| Koisy vs Nina | 0–2 | 0.00% |
| Koisy vs Panda | 1–1 | 50.00% |
| Koisy vs Reina | 0–2 | 0.00% |
| Koisy vs King | 1–0 | 100.00% |
| Koisy vs Asuka | 0–1 | 0.00% |
| Koisy vs Leo | 0–1 | 0.00% |
| Koisy vs Shaheen | 1–0 | 100.00% |
| Koisy vs Kuma | 1–0 | 100.00% |
| Koisy vs Zafina | 0–1 | 0.00% |
| Koisy vs Azucena | 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.