| Roshiiitoshii vs Bryan | 4–7 | 36.36% |
| Roshiiitoshii vs Law | 1–9 | 10.00% |
| Roshiiitoshii vs King | 4–5 | 44.44% |
| Roshiiitoshii vs Jin | 4–5 | 44.44% |
| Roshiiitoshii vs Jun | 2–6 | 25.00% |
| Roshiiitoshii vs Yoshimitsu | 3–4 | 42.86% |
| Roshiiitoshii vs Asuka | 3–3 | 50.00% |
| Roshiiitoshii vs Lee | 3–3 | 50.00% |
| Roshiiitoshii vs Steve | 4–1 | 80.00% |
| Roshiiitoshii vs Alisa | 2–3 | 40.00% |
| Roshiiitoshii vs Nina | 2–3 | 40.00% |
| Roshiiitoshii vs Kazuya | 1–3 | 25.00% |
| Roshiiitoshii vs Lili | 2–2 | 50.00% |
| Roshiiitoshii vs Dragunov | 3–1 | 75.00% |
| Roshiiitoshii vs Claudio | 0–4 | 0.00% |
| Roshiiitoshii vs Reina | 2–2 | 50.00% |
| Roshiiitoshii vs Azucena | 2–2 | 50.00% |
| Roshiiitoshii vs Devil Jin | 0–3 | 0.00% |
| Roshiiitoshii vs Feng | 1–2 | 33.33% |
| Roshiiitoshii vs Leo | 2–1 | 66.67% |
| Roshiiitoshii vs Raven | 2–1 | 66.67% |
| Roshiiitoshii vs Eddy | 0–3 | 0.00% |
| Roshiiitoshii vs Xiaoyu | 1–1 | 50.00% |
| Roshiiitoshii vs Zafina | 2–0 | 100.00% |
| Roshiiitoshii vs Leroy | 2–0 | 100.00% |
| Roshiiitoshii vs Hwoarang | 0–1 | 0.00% |
| Roshiiitoshii vs Lars | 1–0 | 100.00% |
| Roshiiitoshii vs Victor | 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.