| koii vs Reina | 4–9 | 30.77% |
| koii vs Steve | 0–8 | 0.00% |
| koii vs Eddy | 0–7 | 0.00% |
| koii vs Jin | 1–5 | 16.67% |
| koii vs Hwoarang | 0–5 | 0.00% |
| koii vs Bryan | 1–4 | 20.00% |
| koii vs Feng | 0–5 | 0.00% |
| koii vs Paul | 0–4 | 0.00% |
| koii vs Azucena | 1–3 | 25.00% |
| koii vs Victor | 0–4 | 0.00% |
| koii vs Yoshimitsu | 0–3 | 0.00% |
| koii vs Jack-8 | 0–3 | 0.00% |
| koii vs Dragunov | 1–2 | 33.33% |
| koii vs Kuma | 1–2 | 33.33% |
| koii vs Jun | 0–3 | 0.00% |
| koii vs King | 0–2 | 0.00% |
| koii vs Kazuya | 1–1 | 50.00% |
| koii vs Asuka | 0–2 | 0.00% |
| koii vs Lili | 0–2 | 0.00% |
| koii vs Lars | 0–2 | 0.00% |
| koii vs Alisa | 0–2 | 0.00% |
| koii vs Panda | 0–2 | 0.00% |
| koii vs Leroy | 2–0 | 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.