| Nyxii vs Kazuya | 25–28 | 47.17% |
| Nyxii vs Jin | 27–20 | 57.45% |
| Nyxii vs Reina | 15–22 | 40.54% |
| Nyxii vs Clive | 13–14 | 48.15% |
| Nyxii vs Victor | 12–13 | 48.00% |
| Nyxii vs Yoshimitsu | 18–6 | 75.00% |
| Nyxii vs King | 10–13 | 43.48% |
| Nyxii vs Steve | 14–7 | 66.67% |
| Nyxii vs Bryan | 8–11 | 42.11% |
| Nyxii vs Lili | 10–9 | 52.63% |
| Nyxii vs Hwoarang | 7–10 | 41.18% |
| Nyxii vs Law | 7–9 | 43.75% |
| Nyxii vs Dragunov | 10–5 | 66.67% |
| Nyxii vs Heihachi | 5–10 | 33.33% |
| Nyxii vs Feng | 7–7 | 50.00% |
| Nyxii vs Paul | 7–5 | 58.33% |
| Nyxii vs Jun | 7–5 | 58.33% |
| Nyxii vs Eddy | 5–7 | 41.67% |
| Nyxii vs Xiaoyu | 5–6 | 45.45% |
| Nyxii vs Devil Jin | 6–5 | 54.55% |
| Nyxii vs Anna | 6–4 | 60.00% |
| Nyxii vs Leo | 3–6 | 33.33% |
| Nyxii vs Asuka | 5–3 | 62.50% |
| Nyxii vs Leroy | 4–4 | 50.00% |
| Nyxii vs Azucena | 4–4 | 50.00% |
| Nyxii vs Lars | 2–4 | 33.33% |
| Nyxii vs Raven | 3–3 | 50.00% |
| Nyxii vs Armor King | 2–4 | 33.33% |
| Nyxii vs Alisa | 2–3 | 40.00% |
| Nyxii vs Nina | 1–4 | 20.00% |
| Nyxii vs Lee | 2–3 | 40.00% |
| Nyxii vs Jack-8 | 4–0 | 100.00% |
| Nyxii vs Kuma | 1–3 | 25.00% |
| Nyxii vs Lidia | 2–2 | 50.00% |
| Nyxii vs Claudio | 2–0 | 100.00% |
| Nyxii vs Fahkumram | 2–0 | 100.00% |
| Nyxii vs Zafina | 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.