| NiiX vs Asuka | 6–3 | 66.67% |
| NiiX vs Yoshimitsu | 7–1 | 87.50% |
| NiiX vs Jin | 6–2 | 75.00% |
| NiiX vs Devil Jin | 5–3 | 62.50% |
| NiiX vs Reina | 4–4 | 50.00% |
| NiiX vs Feng | 1–6 | 14.29% |
| NiiX vs Law | 4–2 | 66.67% |
| NiiX vs Bryan | 0–6 | 0.00% |
| NiiX vs Lee | 3–3 | 50.00% |
| NiiX vs King | 3–2 | 60.00% |
| NiiX vs Jack-8 | 3–2 | 60.00% |
| NiiX vs Lidia | 3–2 | 60.00% |
| NiiX vs Hwoarang | 3–1 | 75.00% |
| NiiX vs Heihachi | 2–2 | 50.00% |
| NiiX vs Clive | 4–0 | 100.00% |
| NiiX vs Dragunov | 2–1 | 66.67% |
| NiiX vs Leo | 1–2 | 33.33% |
| NiiX vs Leroy | 1–2 | 33.33% |
| NiiX vs Azucena | 1–2 | 33.33% |
| NiiX vs Kazuya | 2–0 | 100.00% |
| NiiX vs Steve | 0–2 | 0.00% |
| NiiX vs Lars | 0–2 | 0.00% |
| NiiX vs Eddy | 0–2 | 0.00% |
| NiiX vs Xiaoyu | 0–1 | 0.00% |
| NiiX vs Lili | 1–0 | 100.00% |
| NiiX vs Alisa | 0–1 | 0.00% |
| NiiX vs Nina | 1–0 | 100.00% |
| NiiX vs Victor | 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.