| Peffy vs Jin | 9–17 | 34.62% |
| Peffy vs King | 3–15 | 16.67% |
| Peffy vs Kazuya | 7–11 | 38.89% |
| Peffy vs Steve | 6–9 | 40.00% |
| Peffy vs Reina | 6–9 | 40.00% |
| Peffy vs Jun | 5–7 | 41.67% |
| Peffy vs Dragunov | 5–6 | 45.45% |
| Peffy vs Hwoarang | 4–6 | 40.00% |
| Peffy vs Victor | 3–7 | 30.00% |
| Peffy vs Law | 2–7 | 22.22% |
| Peffy vs Bryan | 4–5 | 44.44% |
| Peffy vs Alisa | 2–7 | 22.22% |
| Peffy vs Nina | 4–4 | 50.00% |
| Peffy vs Paul | 2–5 | 28.57% |
| Peffy vs Azucena | 2–5 | 28.57% |
| Peffy vs Eddy | 2–5 | 28.57% |
| Peffy vs Xiaoyu | 0–6 | 0.00% |
| Peffy vs Jack-8 | 2–4 | 33.33% |
| Peffy vs Lili | 4–2 | 66.67% |
| Peffy vs Lars | 2–4 | 33.33% |
| Peffy vs Kuma | 2–4 | 33.33% |
| Peffy vs Devil Jin | 0–5 | 0.00% |
| Peffy vs Leroy | 3–2 | 60.00% |
| Peffy vs Yoshimitsu | 0–4 | 0.00% |
| Peffy vs Asuka | 2–2 | 50.00% |
| Peffy vs Lee | 2–2 | 50.00% |
| Peffy vs Lidia | 1–3 | 25.00% |
| Peffy vs Heihachi | 0–4 | 0.00% |
| Peffy vs Feng | 2–0 | 100.00% |
| Peffy vs Leo | 2–0 | 100.00% |
| Peffy vs Shaheen | 2–0 | 100.00% |
| Peffy vs Fahkumram | 0–2 | 0.00% |
| Peffy vs Claudio | 1–0 | 100.00% |
| Peffy vs Anna | 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.