| Niero vs King | 121–108 | 52.84% |
| Niero vs Kazuya | 97–126 | 43.50% |
| Niero vs Jin | 70–96 | 42.17% |
| Niero vs Bryan | 54–77 | 41.22% |
| Niero vs Reina | 46–84 | 35.38% |
| Niero vs Heihachi | 51–72 | 41.46% |
| Niero vs Steve | 50–72 | 40.98% |
| Niero vs Clive | 49–73 | 40.16% |
| Niero vs Dragunov | 46–63 | 42.20% |
| Niero vs Eddy | 52–57 | 47.71% |
| Niero vs Miary Zo | 47–62 | 43.12% |
| Niero vs Armor King | 50–57 | 46.73% |
| Niero vs Hwoarang | 51–55 | 48.11% |
| Niero vs Law | 45–59 | 43.27% |
| Niero vs Jun | 44–60 | 42.31% |
| Niero vs Yoshimitsu | 41–58 | 41.41% |
| Niero vs Fahkumram | 38–49 | 43.68% |
| Niero vs Asuka | 37–46 | 44.58% |
| Niero vs Azucena | 25–51 | 32.89% |
| Niero vs Paul | 22–46 | 32.35% |
| Niero vs Lili | 30–37 | 44.78% |
| Niero vs Victor | 25–37 | 40.32% |
| Niero vs Lidia | 32–29 | 52.46% |
| Niero vs Anna | 24–31 | 43.64% |
| Niero vs Feng | 26–28 | 48.15% |
| Niero vs Lars | 21–33 | 38.89% |
| Niero vs Xiaoyu | 23–27 | 46.00% |
| Niero vs Lee | 16–33 | 32.65% |
| Niero vs Devil Jin | 17–31 | 35.42% |
| Niero vs Nina | 18–29 | 38.30% |
| Niero vs Jack-8 | 17–23 | 42.50% |
| Niero vs Raven | 19–19 | 50.00% |
| Niero vs Leroy | 15–22 | 40.54% |
| Niero vs Leo | 13–21 | 38.24% |
| Niero vs Alisa | 15–19 | 44.12% |
| Niero vs Kuma | 9–18 | 33.33% |
| Niero vs Claudio | 6–20 | 23.08% |
| Niero vs Shaheen | 11–7 | 61.11% |
| Niero vs Panda | 6–7 | 46.15% |
| Niero vs Zafina | 7–5 | 58.33% |
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.