| Master Romulus vs Reina | 31–34 | 47.69% |
| Master Romulus vs King | 21–40 | 34.43% |
| Master Romulus vs Steve | 24–21 | 53.33% |
| Master Romulus vs Jin | 20–22 | 47.62% |
| Master Romulus vs Victor | 8–28 | 22.22% |
| Master Romulus vs Hwoarang | 14–20 | 41.18% |
| Master Romulus vs Xiaoyu | 15–16 | 48.39% |
| Master Romulus vs Dragunov | 7–23 | 23.33% |
| Master Romulus vs Kazuya | 7–19 | 26.92% |
| Master Romulus vs Leo | 15–10 | 60.00% |
| Master Romulus vs Bryan | 8–16 | 33.33% |
| Master Romulus vs Law | 3–20 | 13.04% |
| Master Romulus vs Eddy | 8–15 | 34.78% |
| Master Romulus vs Raven | 12–10 | 54.55% |
| Master Romulus vs Yoshimitsu | 10–11 | 47.62% |
| Master Romulus vs Lee | 10–10 | 50.00% |
| Master Romulus vs Lili | 4–14 | 22.22% |
| Master Romulus vs Azucena | 7–10 | 41.18% |
| Master Romulus vs Lars | 8–8 | 50.00% |
| Master Romulus vs Claudio | 4–11 | 26.67% |
| Master Romulus vs Jun | 5–10 | 33.33% |
| Master Romulus vs Jack-8 | 7–7 | 50.00% |
| Master Romulus vs Alisa | 7–6 | 53.85% |
| Master Romulus vs Lidia | 3–9 | 25.00% |
| Master Romulus vs Asuka | 4–7 | 36.36% |
| Master Romulus vs Leroy | 8–3 | 72.73% |
| Master Romulus vs Devil Jin | 3–7 | 30.00% |
| Master Romulus vs Fahkumram | 3–7 | 30.00% |
| Master Romulus vs Kuma | 3–6 | 33.33% |
| Master Romulus vs Paul | 2–6 | 25.00% |
| Master Romulus vs Nina | 3–5 | 37.50% |
| Master Romulus vs Feng | 4–3 | 57.14% |
| Master Romulus vs Zafina | 3–4 | 42.86% |
| Master Romulus vs Clive | 5–2 | 71.43% |
| Master Romulus vs Heihachi | 1–1 | 50.00% |
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.