| Mumei vs Jin | 13–13 | 50.00% |
| Mumei vs Clive | 19–7 | 73.08% |
| Mumei vs Reina | 17–2 | 89.47% |
| Mumei vs Law | 13–4 | 76.47% |
| Mumei vs Kazuya | 9–8 | 52.94% |
| Mumei vs Heihachi | 9–8 | 52.94% |
| Mumei vs Nina | 12–3 | 80.00% |
| Mumei vs King | 10–3 | 76.92% |
| Mumei vs Lili | 8–5 | 61.54% |
| Mumei vs Steve | 6–6 | 50.00% |
| Mumei vs Xiaoyu | 6–5 | 54.55% |
| Mumei vs Dragunov | 6–4 | 60.00% |
| Mumei vs Paul | 6–2 | 75.00% |
| Mumei vs Yoshimitsu | 5–2 | 71.43% |
| Mumei vs Hwoarang | 1–6 | 14.29% |
| Mumei vs Bryan | 4–3 | 57.14% |
| Mumei vs Leroy | 3–4 | 42.86% |
| Mumei vs Jack-8 | 4–2 | 66.67% |
| Mumei vs Feng | 3–3 | 50.00% |
| Mumei vs Azucena | 3–2 | 60.00% |
| Mumei vs Eddy | 0–5 | 0.00% |
| Mumei vs Asuka | 3–2 | 60.00% |
| Mumei vs Leo | 2–3 | 40.00% |
| Mumei vs Lars | 2–2 | 50.00% |
| Mumei vs Alisa | 2–2 | 50.00% |
| Mumei vs Jun | 1–2 | 33.33% |
| Mumei vs Victor | 2–0 | 100.00% |
| Mumei vs Lidia | 2–0 | 100.00% |
| Mumei vs Raven | 0–2 | 0.00% |
| Mumei vs Devil Jin | 0–1 | 0.00% |
| Mumei vs Claudio | 0–1 | 0.00% |
| Mumei vs Zafina | 0–1 | 0.00% |
| Mumei vs Panda | 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.