| Romio1 vs King | 5–8 | 38.46% |
| Romio1 vs Jin | 2–10 | 16.67% |
| Romio1 vs Steve | 4–6 | 40.00% |
| Romio1 vs Azucena | 3–5 | 37.50% |
| Romio1 vs Law | 1–6 | 14.29% |
| Romio1 vs Hwoarang | 1–6 | 14.29% |
| Romio1 vs Lili | 4–3 | 57.14% |
| Romio1 vs Dragunov | 6–1 | 85.71% |
| Romio1 vs Jun | 3–4 | 42.86% |
| Romio1 vs Reina | 2–5 | 28.57% |
| Romio1 vs Clive | 3–3 | 50.00% |
| Romio1 vs Yoshimitsu | 2–2 | 50.00% |
| Romio1 vs Kazuya | 1–3 | 25.00% |
| Romio1 vs Leo | 1–3 | 25.00% |
| Romio1 vs Nina | 1–3 | 25.00% |
| Romio1 vs Lee | 1–2 | 33.33% |
| Romio1 vs Raven | 2–1 | 66.67% |
| Romio1 vs Lidia | 3–0 | 100.00% |
| Romio1 vs Armor King | 0–3 | 0.00% |
| Romio1 vs Paul | 2–0 | 100.00% |
| Romio1 vs Bryan | 2–0 | 100.00% |
| Romio1 vs Asuka | 0–2 | 0.00% |
| Romio1 vs Feng | 1–1 | 50.00% |
| Romio1 vs Alisa | 1–1 | 50.00% |
| Romio1 vs Kuma | 1–1 | 50.00% |
| Romio1 vs Zafina | 2–0 | 100.00% |
| Romio1 vs Miary Zo | 2–0 | 100.00% |
| Romio1 vs Jack-8 | 0–1 | 0.00% |
| Romio1 vs Leroy | 0–1 | 0.00% |
| Romio1 vs Heihachi | 0–1 | 0.00% |
| Romio1 vs Anna | 0–1 | 0.00% |
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.