| Medusaa vs King | 27–42 | 39.13% |
| Medusaa vs Kazuya | 18–49 | 26.87% |
| Medusaa vs Jin | 22–25 | 46.81% |
| Medusaa vs Bryan | 10–34 | 22.73% |
| Medusaa vs Steve | 14–27 | 34.15% |
| Medusaa vs Hwoarang | 11–24 | 31.43% |
| Medusaa vs Heihachi | 8–23 | 25.81% |
| Medusaa vs Asuka | 5–25 | 16.67% |
| Medusaa vs Dragunov | 5–25 | 16.67% |
| Medusaa vs Devil Jin | 10–17 | 37.04% |
| Medusaa vs Jun | 10–17 | 37.04% |
| Medusaa vs Law | 9–17 | 34.62% |
| Medusaa vs Paul | 8–16 | 33.33% |
| Medusaa vs Anna | 8–13 | 38.10% |
| Medusaa vs Lars | 8–12 | 40.00% |
| Medusaa vs Lidia | 9–10 | 47.37% |
| Medusaa vs Eddy | 0–18 | 0.00% |
| Medusaa vs Reina | 4–13 | 23.53% |
| Medusaa vs Fahkumram | 3–13 | 18.75% |
| Medusaa vs Lili | 7–8 | 46.67% |
| Medusaa vs Victor | 5–9 | 35.71% |
| Medusaa vs Clive | 4–10 | 28.57% |
| Medusaa vs Azucena | 3–9 | 25.00% |
| Medusaa vs Yoshimitsu | 3–8 | 27.27% |
| Medusaa vs Xiaoyu | 3–8 | 27.27% |
| Medusaa vs Shaheen | 3–8 | 27.27% |
| Medusaa vs Lee | 4–7 | 36.36% |
| Medusaa vs Jack-8 | 3–5 | 37.50% |
| Medusaa vs Kuma | 3–5 | 37.50% |
| Medusaa vs Feng | 0–7 | 0.00% |
| Medusaa vs Nina | 1–6 | 14.29% |
| Medusaa vs Alisa | 2–4 | 33.33% |
| Medusaa vs Raven | 2–4 | 33.33% |
| Medusaa vs Armor King | 2–3 | 40.00% |
| Medusaa vs Claudio | 0–3 | 0.00% |
| Medusaa vs Zafina | 2–1 | 66.67% |
| Medusaa vs Leo | 0–2 | 0.00% |
| Medusaa vs Panda | 2–0 | 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.