| Mamañema vs Kazuya | 10–10 | 50.00% |
| Mamañema vs Heihachi | 12–5 | 70.59% |
| Mamañema vs King | 8–7 | 53.33% |
| Mamañema vs Jun | 11–4 | 73.33% |
| Mamañema vs Jin | 8–5 | 61.54% |
| Mamañema vs Eddy | 7–6 | 53.85% |
| Mamañema vs Bryan | 7–5 | 58.33% |
| Mamañema vs Asuka | 3–7 | 30.00% |
| Mamañema vs Lili | 7–3 | 70.00% |
| Mamañema vs Dragunov | 4–6 | 40.00% |
| Mamañema vs Clive | 8–2 | 80.00% |
| Mamañema vs Law | 7–2 | 77.78% |
| Mamañema vs Azucena | 6–3 | 66.67% |
| Mamañema vs Paul | 3–5 | 37.50% |
| Mamañema vs Hwoarang | 3–5 | 37.50% |
| Mamañema vs Reina | 6–2 | 75.00% |
| Mamañema vs Xiaoyu | 4–2 | 66.67% |
| Mamañema vs Steve | 4–2 | 66.67% |
| Mamañema vs Devil Jin | 2–4 | 33.33% |
| Mamañema vs Alisa | 3–3 | 50.00% |
| Mamañema vs Lee | 4–2 | 66.67% |
| Mamañema vs Lidia | 4–2 | 66.67% |
| Mamañema vs Shaheen | 2–3 | 40.00% |
| Mamañema vs Leroy | 3–2 | 60.00% |
| Mamañema vs Victor | 2–2 | 50.00% |
| Mamañema vs Feng | 1–2 | 33.33% |
| Mamañema vs Zafina | 2–0 | 100.00% |
| Mamañema vs Yoshimitsu | 1–0 | 100.00% |
| Mamañema vs Nina | 1–0 | 100.00% |
| Mamañema vs Kuma | 1–0 | 100.00% |
| Mamañema vs Raven | 1–0 | 100.00% |
| Mamañema vs Fahkumram | 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.