| ReallyNasty vs Law | 7–9 | 43.75% |
| ReallyNasty vs Jin | 9–3 | 75.00% |
| ReallyNasty vs Hwoarang | 7–4 | 63.64% |
| ReallyNasty vs Dragunov | 6–4 | 60.00% |
| ReallyNasty vs Lars | 5–2 | 71.43% |
| ReallyNasty vs King | 6–0 | 100.00% |
| ReallyNasty vs Jack-8 | 2–4 | 33.33% |
| ReallyNasty vs Reina | 5–1 | 83.33% |
| ReallyNasty vs Victor | 5–1 | 83.33% |
| ReallyNasty vs Clive | 4–2 | 66.67% |
| ReallyNasty vs Steve | 1–4 | 20.00% |
| ReallyNasty vs Raven | 3–2 | 60.00% |
| ReallyNasty vs Feng | 0–4 | 0.00% |
| ReallyNasty vs Azucena | 4–0 | 100.00% |
| ReallyNasty vs Lili | 1–2 | 33.33% |
| ReallyNasty vs Claudio | 1–2 | 33.33% |
| ReallyNasty vs Lidia | 3–0 | 100.00% |
| ReallyNasty vs Paul | 0–2 | 0.00% |
| ReallyNasty vs Bryan | 1–1 | 50.00% |
| ReallyNasty vs Asuka | 2–0 | 100.00% |
| ReallyNasty vs Leo | 2–0 | 100.00% |
| ReallyNasty vs Nina | 2–0 | 100.00% |
| ReallyNasty vs Zafina | 2–0 | 100.00% |
| ReallyNasty vs Kazuya | 1–0 | 100.00% |
| ReallyNasty vs Devil Jin | 0–1 | 0.00% |
| ReallyNasty vs Lee | 1–0 | 100.00% |
| ReallyNasty vs Kuma | 0–1 | 0.00% |
| ReallyNasty vs Leroy | 0–1 | 0.00% |
| ReallyNasty vs Eddy | 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.