| RomanOnMars vs Lili | 7–10 | 41.18% |
| RomanOnMars vs Dragunov | 11–6 | 64.71% |
| RomanOnMars vs Kazuya | 7–8 | 46.67% |
| RomanOnMars vs Steve | 10–5 | 66.67% |
| RomanOnMars vs King | 9–5 | 64.29% |
| RomanOnMars vs Jin | 8–6 | 57.14% |
| RomanOnMars vs Law | 8–3 | 72.73% |
| RomanOnMars vs Lars | 5–6 | 45.45% |
| RomanOnMars vs Azucena | 6–5 | 54.55% |
| RomanOnMars vs Yoshimitsu | 3–7 | 30.00% |
| RomanOnMars vs Hwoarang | 7–3 | 70.00% |
| RomanOnMars vs Bryan | 6–3 | 66.67% |
| RomanOnMars vs Xiaoyu | 4–3 | 57.14% |
| RomanOnMars vs Asuka | 4–3 | 57.14% |
| RomanOnMars vs Victor | 5–2 | 71.43% |
| RomanOnMars vs Devil Jin | 3–3 | 50.00% |
| RomanOnMars vs Nina | 4–2 | 66.67% |
| RomanOnMars vs Reina | 2–4 | 33.33% |
| RomanOnMars vs Leroy | 2–3 | 40.00% |
| RomanOnMars vs Raven | 4–1 | 80.00% |
| RomanOnMars vs Anna | 3–2 | 60.00% |
| RomanOnMars vs Feng | 3–1 | 75.00% |
| RomanOnMars vs Leo | 3–1 | 75.00% |
| RomanOnMars vs Lee | 4–0 | 100.00% |
| RomanOnMars vs Jun | 3–1 | 75.00% |
| RomanOnMars vs Eddy | 3–1 | 75.00% |
| RomanOnMars vs Paul | 1–2 | 33.33% |
| RomanOnMars vs Alisa | 1–2 | 33.33% |
| RomanOnMars vs Lidia | 1–2 | 33.33% |
| RomanOnMars vs Jack-8 | 0–1 | 0.00% |
| RomanOnMars vs Claudio | 0–1 | 0.00% |
| RomanOnMars vs Kuma | 0–1 | 0.00% |
| RomanOnMars vs Zafina | 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.