| Nienor vs King | 47–67 | 41.23% |
| Nienor vs Reina | 46–41 | 52.87% |
| Nienor vs Kazuya | 29–44 | 39.73% |
| Nienor vs Steve | 39–33 | 54.17% |
| Nienor vs Jin | 31–39 | 44.29% |
| Nienor vs Law | 25–40 | 38.46% |
| Nienor vs Eddy | 17–47 | 26.56% |
| Nienor vs Azucena | 29–30 | 49.15% |
| Nienor vs Hwoarang | 32–25 | 56.14% |
| Nienor vs Bryan | 20–34 | 37.04% |
| Nienor vs Jun | 23–30 | 43.40% |
| Nienor vs Lili | 21–27 | 43.75% |
| Nienor vs Victor | 23–22 | 51.11% |
| Nienor vs Yoshimitsu | 19–24 | 44.19% |
| Nienor vs Paul | 16–25 | 39.02% |
| Nienor vs Lee | 15–23 | 39.47% |
| Nienor vs Dragunov | 11–22 | 33.33% |
| Nienor vs Lars | 13–20 | 39.39% |
| Nienor vs Asuka | 13–17 | 43.33% |
| Nienor vs Devil Jin | 14–11 | 56.00% |
| Nienor vs Alisa | 4–19 | 17.39% |
| Nienor vs Nina | 8–15 | 34.78% |
| Nienor vs Lidia | 10–11 | 47.62% |
| Nienor vs Xiaoyu | 14–6 | 70.00% |
| Nienor vs Leo | 7–11 | 38.89% |
| Nienor vs Raven | 9–8 | 52.94% |
| Nienor vs Zafina | 5–11 | 31.25% |
| Nienor vs Jack-8 | 8–6 | 57.14% |
| Nienor vs Feng | 4–10 | 28.57% |
| Nienor vs Claudio | 8–3 | 72.73% |
| Nienor vs Kuma | 6–5 | 54.55% |
| Nienor vs Shaheen | 4–3 | 57.14% |
| Nienor vs Leroy | 2–5 | 28.57% |
| Nienor vs Heihachi | 3–4 | 42.86% |
| Nienor vs Panda | 1–2 | 33.33% |
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.