| Niito vs Reina | 12–2 | 85.71% |
| Niito vs Jin | 11–2 | 84.62% |
| Niito vs Law | 10–2 | 83.33% |
| Niito vs King | 7–5 | 58.33% |
| Niito vs Kazuya | 12–0 | 100.00% |
| Niito vs Asuka | 6–3 | 66.67% |
| Niito vs Lars | 7–1 | 87.50% |
| Niito vs Hwoarang | 6–1 | 85.71% |
| Niito vs Steve | 5–2 | 71.43% |
| Niito vs Devil Jin | 5–1 | 83.33% |
| Niito vs Dragunov | 4–2 | 66.67% |
| Niito vs Alisa | 4–2 | 66.67% |
| Niito vs Yoshimitsu | 2–3 | 40.00% |
| Niito vs Bryan | 3–2 | 60.00% |
| Niito vs Lili | 3–2 | 60.00% |
| Niito vs Azucena | 4–1 | 80.00% |
| Niito vs Raven | 2–3 | 40.00% |
| Niito vs Lee | 3–1 | 75.00% |
| Niito vs Victor | 4–0 | 100.00% |
| Niito vs Lidia | 3–1 | 75.00% |
| Niito vs Heihachi | 3–1 | 75.00% |
| Niito vs Paul | 2–1 | 66.67% |
| Niito vs Zafina | 1–2 | 33.33% |
| Niito vs Jack-8 | 2–0 | 100.00% |
| Niito vs Claudio | 2–0 | 100.00% |
| Niito vs Nina | 1–1 | 50.00% |
| Niito vs Kuma | 2–0 | 100.00% |
| Niito vs Jun | 2–0 | 100.00% |
| Niito vs Xiaoyu | 1–0 | 100.00% |
| Niito vs Eddy | 1–0 | 100.00% |
| Niito vs Clive | 0–1 | 0.00% |
| Niito vs Fahkumram | 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.