| Maffy vs Bryan | 32–32 | 50.00% |
| Maffy vs King | 27–25 | 51.92% |
| Maffy vs Dragunov | 38–13 | 74.51% |
| Maffy vs Reina | 34–11 | 75.56% |
| Maffy vs Hwoarang | 22–22 | 50.00% |
| Maffy vs Jin | 30–13 | 69.77% |
| Maffy vs Lee | 23–20 | 53.49% |
| Maffy vs Eddy | 20–19 | 51.28% |
| Maffy vs Lili | 19–17 | 52.78% |
| Maffy vs Steve | 22–13 | 62.86% |
| Maffy vs Kazuya | 20–14 | 58.82% |
| Maffy vs Azucena | 18–16 | 52.94% |
| Maffy vs Law | 21–12 | 63.64% |
| Maffy vs Xiaoyu | 12–20 | 37.50% |
| Maffy vs Yoshimitsu | 20–10 | 66.67% |
| Maffy vs Alisa | 12–17 | 41.38% |
| Maffy vs Feng | 11–17 | 39.29% |
| Maffy vs Nina | 12–14 | 46.15% |
| Maffy vs Victor | 16–10 | 61.54% |
| Maffy vs Leroy | 13–12 | 52.00% |
| Maffy vs Raven | 13–12 | 52.00% |
| Maffy vs Paul | 13–10 | 56.52% |
| Maffy vs Devil Jin | 13–10 | 56.52% |
| Maffy vs Jun | 11–12 | 47.83% |
| Maffy vs Leo | 13–6 | 68.42% |
| Maffy vs Lars | 8–9 | 47.06% |
| Maffy vs Jack-8 | 5–11 | 31.25% |
| Maffy vs Asuka | 9–6 | 60.00% |
| Maffy vs Claudio | 4–10 | 28.57% |
| Maffy vs Zafina | 6–7 | 46.15% |
| Maffy vs Shaheen | 6–5 | 54.55% |
| Maffy vs Kuma | 6–5 | 54.55% |
| Maffy vs Clive | 4–3 | 57.14% |
| Maffy vs Fahkumram | 4–3 | 57.14% |
| Maffy vs Heihachi | 2–3 | 40.00% |
| Maffy vs Lidia | 1–2 | 33.33% |
| Maffy vs Panda | 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.