| Nieya vs Bryan | 11–5 | 68.75% |
| Nieya vs Jin | 10–5 | 66.67% |
| Nieya vs Dragunov | 5–8 | 38.46% |
| Nieya vs Kazuya | 5–7 | 41.67% |
| Nieya vs Steve | 5–5 | 50.00% |
| Nieya vs Lili | 3–7 | 30.00% |
| Nieya vs Law | 2–7 | 22.22% |
| Nieya vs Feng | 4–3 | 57.14% |
| Nieya vs Paul | 3–3 | 50.00% |
| Nieya vs King | 5–1 | 83.33% |
| Nieya vs Xiaoyu | 3–3 | 50.00% |
| Nieya vs Nina | 3–3 | 50.00% |
| Nieya vs Devil Jin | 1–4 | 20.00% |
| Nieya vs Jun | 4–1 | 80.00% |
| Nieya vs Heihachi | 2–3 | 40.00% |
| Nieya vs Yoshimitsu | 2–2 | 50.00% |
| Nieya vs Hwoarang | 0–4 | 0.00% |
| Nieya vs Lee | 2–2 | 50.00% |
| Nieya vs Reina | 4–0 | 100.00% |
| Nieya vs Alisa | 0–3 | 0.00% |
| Nieya vs Kuma | 3–0 | 100.00% |
| Nieya vs Leroy | 1–2 | 33.33% |
| Nieya vs Eddy | 1–2 | 33.33% |
| Nieya vs Clive | 1–2 | 33.33% |
| Nieya vs Asuka | 2–0 | 100.00% |
| Nieya vs Lars | 2–0 | 100.00% |
| Nieya vs Claudio | 2–0 | 100.00% |
| Nieya vs Azucena | 2–0 | 100.00% |
| Nieya vs Lidia | 2–0 | 100.00% |
| Nieya vs Anna | 0–2 | 0.00% |
| Nieya vs Leo | 1–0 | 100.00% |
| Nieya vs Victor | 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.