| Monsieur Siou vs Hwoarang | 8–11 | 42.11% |
| Monsieur Siou vs Lili | 5–8 | 38.46% |
| Monsieur Siou vs King | 2–10 | 16.67% |
| Monsieur Siou vs Law | 2–9 | 18.18% |
| Monsieur Siou vs Jin | 4–7 | 36.36% |
| Monsieur Siou vs Eddy | 2–9 | 18.18% |
| Monsieur Siou vs Yoshimitsu | 7–2 | 77.78% |
| Monsieur Siou vs Bryan | 0–7 | 0.00% |
| Monsieur Siou vs Devil Jin | 3–4 | 42.86% |
| Monsieur Siou vs Kazuya | 3–3 | 50.00% |
| Monsieur Siou vs Steve | 3–3 | 50.00% |
| Monsieur Siou vs Asuka | 4–2 | 66.67% |
| Monsieur Siou vs Lars | 0–6 | 0.00% |
| Monsieur Siou vs Reina | 0–5 | 0.00% |
| Monsieur Siou vs Paul | 2–2 | 50.00% |
| Monsieur Siou vs Alisa | 0–4 | 0.00% |
| Monsieur Siou vs Lee | 0–4 | 0.00% |
| Monsieur Siou vs Dragunov | 2–1 | 66.67% |
| Monsieur Siou vs Azucena | 2–1 | 66.67% |
| Monsieur Siou vs Raven | 1–2 | 33.33% |
| Monsieur Siou vs Xiaoyu | 0–2 | 0.00% |
| Monsieur Siou vs Leo | 0–2 | 0.00% |
| Monsieur Siou vs Nina | 0–2 | 0.00% |
| Monsieur Siou vs Kuma | 0–2 | 0.00% |
| Monsieur Siou vs Leroy | 0–2 | 0.00% |
| Monsieur Siou vs Victor | 0–2 | 0.00% |
| Monsieur Siou vs Shaheen | 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.