| Joan1991 vs Eddy | 16–62 | 20.51% |
| Joan1991 vs Reina | 22–34 | 39.29% |
| Joan1991 vs King | 24–21 | 53.33% |
| Joan1991 vs Steve | 16–26 | 38.10% |
| Joan1991 vs Hwoarang | 18–23 | 43.90% |
| Joan1991 vs Jin | 13–28 | 31.71% |
| Joan1991 vs Dragunov | 14–19 | 42.42% |
| Joan1991 vs Kazuya | 9–21 | 30.00% |
| Joan1991 vs Azucena | 11–19 | 36.67% |
| Joan1991 vs Jun | 9–19 | 32.14% |
| Joan1991 vs Law | 7–20 | 25.93% |
| Joan1991 vs Bryan | 10–13 | 43.48% |
| Joan1991 vs Asuka | 11–10 | 52.38% |
| Joan1991 vs Xiaoyu | 14–5 | 73.68% |
| Joan1991 vs Lili | 8–11 | 42.11% |
| Joan1991 vs Yoshimitsu | 9–9 | 50.00% |
| Joan1991 vs Nina | 6–12 | 33.33% |
| Joan1991 vs Victor | 5–12 | 29.41% |
| Joan1991 vs Leroy | 2–14 | 12.50% |
| Joan1991 vs Feng | 2–13 | 13.33% |
| Joan1991 vs Raven | 4–11 | 26.67% |
| Joan1991 vs Alisa | 5–9 | 35.71% |
| Joan1991 vs Lars | 3–10 | 23.08% |
| Joan1991 vs Shaheen | 6–7 | 46.15% |
| Joan1991 vs Devil Jin | 3–8 | 27.27% |
| Joan1991 vs Jack-8 | 3–6 | 33.33% |
| Joan1991 vs Lee | 3–6 | 33.33% |
| Joan1991 vs Leo | 5–3 | 62.50% |
| Joan1991 vs Paul | 1–5 | 16.67% |
| Joan1991 vs Kuma | 0–6 | 0.00% |
| Joan1991 vs Zafina | 2–4 | 33.33% |
| Joan1991 vs Claudio | 1–4 | 20.00% |
| Joan1991 vs Lidia | 0–4 | 0.00% |
| Joan1991 vs Heihachi | 0–2 | 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.