| RomeruKun vs Reina | 11–20 | 35.48% |
| RomeruKun vs Kazuya | 9–15 | 37.50% |
| RomeruKun vs Jin | 3–18 | 14.29% |
| RomeruKun vs King | 7–13 | 35.00% |
| RomeruKun vs Steve | 7–12 | 36.84% |
| RomeruKun vs Law | 3–13 | 18.75% |
| RomeruKun vs Yoshimitsu | 3–11 | 21.43% |
| RomeruKun vs Alisa | 6–8 | 42.86% |
| RomeruKun vs Azucena | 5–9 | 35.71% |
| RomeruKun vs Hwoarang | 1–12 | 7.69% |
| RomeruKun vs Lili | 5–8 | 38.46% |
| RomeruKun vs Nina | 6–7 | 46.15% |
| RomeruKun vs Lidia | 2–10 | 16.67% |
| RomeruKun vs Devil Jin | 4–7 | 36.36% |
| RomeruKun vs Bryan | 2–8 | 20.00% |
| RomeruKun vs Dragunov | 4–6 | 40.00% |
| RomeruKun vs Heihachi | 0–10 | 0.00% |
| RomeruKun vs Asuka | 5–4 | 55.56% |
| RomeruKun vs Paul | 3–5 | 37.50% |
| RomeruKun vs Lee | 3–5 | 37.50% |
| RomeruKun vs Jun | 2–6 | 25.00% |
| RomeruKun vs Victor | 4–4 | 50.00% |
| RomeruKun vs Eddy | 3–5 | 37.50% |
| RomeruKun vs Xiaoyu | 3–4 | 42.86% |
| RomeruKun vs Claudio | 2–5 | 28.57% |
| RomeruKun vs Leo | 1–4 | 20.00% |
| RomeruKun vs Kuma | 2–2 | 50.00% |
| RomeruKun vs Zafina | 0–3 | 0.00% |
| RomeruKun vs Jack-8 | 0–2 | 0.00% |
| RomeruKun vs Feng | 0–2 | 0.00% |
| RomeruKun vs Raven | 1–0 | 100.00% |
| RomeruKun vs Panda | 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.