| Niko vs Reina | 27–19 | 58.70% |
| Niko vs King | 18–18 | 50.00% |
| Niko vs Kazuya | 21–13 | 61.76% |
| Niko vs Steve | 14–14 | 50.00% |
| Niko vs Jin | 15–11 | 57.69% |
| Niko vs Bryan | 12–11 | 52.17% |
| Niko vs Eddy | 8–14 | 36.36% |
| Niko vs Lili | 8–11 | 42.11% |
| Niko vs Leo | 10–7 | 58.82% |
| Niko vs Hwoarang | 7–9 | 43.75% |
| Niko vs Dragunov | 4–12 | 25.00% |
| Niko vs Azucena | 8–5 | 61.54% |
| Niko vs Jun | 6–6 | 50.00% |
| Niko vs Yoshimitsu | 5–6 | 45.45% |
| Niko vs Asuka | 6–3 | 66.67% |
| Niko vs Alisa | 1–8 | 11.11% |
| Niko vs Victor | 4–5 | 44.44% |
| Niko vs Law | 4–4 | 50.00% |
| Niko vs Paul | 1–6 | 14.29% |
| Niko vs Xiaoyu | 5–2 | 71.43% |
| Niko vs Jack-8 | 1–6 | 14.29% |
| Niko vs Leroy | 2–5 | 28.57% |
| Niko vs Feng | 2–4 | 33.33% |
| Niko vs Nina | 1–5 | 16.67% |
| Niko vs Lars | 2–3 | 40.00% |
| Niko vs Claudio | 1–4 | 20.00% |
| Niko vs Lee | 3–2 | 60.00% |
| Niko vs Zafina | 0–3 | 0.00% |
| Niko vs Heihachi | 2–1 | 66.67% |
| Niko vs Kuma | 0–2 | 0.00% |
| Niko vs Devil Jin | 0–1 | 0.00% |
| Niko vs Shaheen | 0–1 | 0.00% |
| Niko vs Panda | 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.