| Oniichan vs Jun | 6–2 | 75.00% |
| Oniichan vs Steve | 3–4 | 42.86% |
| Oniichan vs Xiaoyu | 2–4 | 33.33% |
| Oniichan vs Lili | 4–2 | 66.67% |
| Oniichan vs Raven | 3–3 | 50.00% |
| Oniichan vs Reina | 4–1 | 80.00% |
| Oniichan vs Azucena | 2–3 | 40.00% |
| Oniichan vs Yoshimitsu | 4–0 | 100.00% |
| Oniichan vs Jin | 4–0 | 100.00% |
| Oniichan vs Kazuya | 3–1 | 75.00% |
| Oniichan vs Dragunov | 2–2 | 50.00% |
| Oniichan vs Leo | 2–2 | 50.00% |
| Oniichan vs Lidia | 2–2 | 50.00% |
| Oniichan vs Hwoarang | 0–3 | 0.00% |
| Oniichan vs Law | 0–2 | 0.00% |
| Oniichan vs King | 1–1 | 50.00% |
| Oniichan vs Bryan | 2–0 | 100.00% |
| Oniichan vs Asuka | 2–0 | 100.00% |
| Oniichan vs Feng | 0–2 | 0.00% |
| Oniichan vs Leroy | 2–0 | 100.00% |
| Oniichan vs Eddy | 2–0 | 100.00% |
| Oniichan vs Jack-8 | 1–0 | 100.00% |
| Oniichan vs Lars | 1–0 | 100.00% |
| Oniichan vs Shaheen | 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.