| Romio vs King | 22–16 | 57.89% |
| Romio vs Law | 18–16 | 52.94% |
| Romio vs Reina | 14–12 | 53.85% |
| Romio vs Lili | 10–15 | 40.00% |
| Romio vs Jin | 10–11 | 47.62% |
| Romio vs Kazuya | 8–11 | 42.11% |
| Romio vs Bryan | 12–5 | 70.59% |
| Romio vs Hwoarang | 7–9 | 43.75% |
| Romio vs Paul | 7–8 | 46.67% |
| Romio vs Lidia | 11–4 | 73.33% |
| Romio vs Raven | 7–7 | 50.00% |
| Romio vs Dragunov | 8–5 | 61.54% |
| Romio vs Alisa | 6–7 | 46.15% |
| Romio vs Steve | 3–9 | 25.00% |
| Romio vs Asuka | 9–3 | 75.00% |
| Romio vs Eddy | 9–3 | 75.00% |
| Romio vs Xiaoyu | 4–7 | 36.36% |
| Romio vs Leo | 8–3 | 72.73% |
| Romio vs Jun | 3–8 | 27.27% |
| Romio vs Clive | 5–6 | 45.45% |
| Romio vs Devil Jin | 4–6 | 40.00% |
| Romio vs Yoshimitsu | 4–5 | 44.44% |
| Romio vs Claudio | 6–2 | 75.00% |
| Romio vs Azucena | 5–3 | 62.50% |
| Romio vs Nina | 2–5 | 28.57% |
| Romio vs Victor | 2–5 | 28.57% |
| Romio vs Heihachi | 5–2 | 71.43% |
| Romio vs Feng | 4–2 | 66.67% |
| Romio vs Zafina | 3–3 | 50.00% |
| Romio vs Anna | 4–2 | 66.67% |
| Romio vs Lee | 3–2 | 60.00% |
| Romio vs Lars | 4–0 | 100.00% |
| Romio vs Leroy | 4–0 | 100.00% |
| Romio vs Jack-8 | 1–1 | 50.00% |
| Romio vs Shaheen | 2–0 | 100.00% |
| Romio vs Kuma | 0–2 | 0.00% |
| Romio vs Fahkumram | 2–0 | 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.