| Niichan vs Bryan | 19–18 | 51.35% |
| Niichan vs Reina | 16–18 | 47.06% |
| Niichan vs Jin | 17–13 | 56.67% |
| Niichan vs King | 10–17 | 37.04% |
| Niichan vs Hwoarang | 7–14 | 33.33% |
| Niichan vs Alisa | 14–5 | 73.68% |
| Niichan vs Eddy | 11–5 | 68.75% |
| Niichan vs Paul | 10–5 | 66.67% |
| Niichan vs Steve | 6–9 | 40.00% |
| Niichan vs Law | 7–6 | 53.85% |
| Niichan vs Yoshimitsu | 6–7 | 46.15% |
| Niichan vs Jun | 6–7 | 46.15% |
| Niichan vs Dragunov | 7–5 | 58.33% |
| Niichan vs Asuka | 5–5 | 50.00% |
| Niichan vs Nina | 1–8 | 11.11% |
| Niichan vs Lili | 5–3 | 62.50% |
| Niichan vs Devil Jin | 6–1 | 85.71% |
| Niichan vs Leroy | 4–3 | 57.14% |
| Niichan vs Jack-8 | 3–3 | 50.00% |
| Niichan vs Azucena | 5–1 | 83.33% |
| Niichan vs Shaheen | 3–2 | 60.00% |
| Niichan vs Kuma | 1–4 | 20.00% |
| Niichan vs Lidia | 3–2 | 60.00% |
| Niichan vs Xiaoyu | 1–3 | 25.00% |
| Niichan vs Kazuya | 1–2 | 33.33% |
| Niichan vs Lars | 0–3 | 0.00% |
| Niichan vs Lee | 1–2 | 33.33% |
| Niichan vs Feng | 2–1 | 66.67% |
| Niichan vs Victor | 1–1 | 50.00% |
| Niichan vs Panda | 0–2 | 0.00% |
| Niichan vs Leo | 0–1 | 0.00% |
| Niichan vs Claudio | 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.