| Niiji vs Armor King | 71–85 | 45.51% |
| Niiji vs Kazuya | 65–59 | 52.42% |
| Niiji vs Steve | 60–51 | 54.05% |
| Niiji vs Heihachi | 61–45 | 57.55% |
| Niiji vs King | 49–53 | 48.04% |
| Niiji vs Jin | 44–50 | 46.81% |
| Niiji vs Bryan | 39–54 | 41.94% |
| Niiji vs Law | 41–40 | 50.62% |
| Niiji vs Hwoarang | 37–38 | 49.33% |
| Niiji vs Reina | 39–33 | 54.17% |
| Niiji vs Lee | 25–39 | 39.06% |
| Niiji vs Yoshimitsu | 26–31 | 45.61% |
| Niiji vs Paul | 28–28 | 50.00% |
| Niiji vs Victor | 28–28 | 50.00% |
| Niiji vs Fahkumram | 24–31 | 43.64% |
| Niiji vs Dragunov | 21–33 | 38.89% |
| Niiji vs Nina | 28–26 | 51.85% |
| Niiji vs Jun | 30–24 | 55.56% |
| Niiji vs Azucena | 21–31 | 40.38% |
| Niiji vs Lidia | 23–27 | 46.00% |
| Niiji vs Xiaoyu | 21–24 | 46.67% |
| Niiji vs Eddy | 21–24 | 46.67% |
| Niiji vs Miary Zo | 13–32 | 28.89% |
| Niiji vs Asuka | 30–14 | 68.18% |
| Niiji vs Lars | 19–25 | 43.18% |
| Niiji vs Leroy | 24–20 | 54.55% |
| Niiji vs Lili | 25–18 | 58.14% |
| Niiji vs Anna | 14–20 | 41.18% |
| Niiji vs Feng | 16–15 | 51.61% |
| Niiji vs Raven | 13–18 | 41.94% |
| Niiji vs Alisa | 9–21 | 30.00% |
| Niiji vs Leo | 14–15 | 48.28% |
| Niiji vs Devil Jin | 10–16 | 38.46% |
| Niiji vs Claudio | 7–16 | 30.43% |
| Niiji vs Jack-8 | 6–11 | 35.29% |
| Niiji vs Clive | 7–9 | 43.75% |
| Niiji vs Kuma | 4–11 | 26.67% |
| Niiji vs Shaheen | 5–6 | 45.45% |
| Niiji vs Zafina | 6–4 | 60.00% |
| Niiji vs Panda | 1–1 | 50.00% |
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.