| Medusa vs Steve | 8–8 | 50.00% |
| Medusa vs Victor | 4–12 | 25.00% |
| Medusa vs Bryan | 6–6 | 50.00% |
| Medusa vs King | 4–7 | 36.36% |
| Medusa vs Hwoarang | 5–6 | 45.45% |
| Medusa vs Kazuya | 7–3 | 70.00% |
| Medusa vs Fahkumram | 6–3 | 66.67% |
| Medusa vs Devil Jin | 5–2 | 71.43% |
| Medusa vs Alisa | 2–5 | 28.57% |
| Medusa vs Lili | 6–0 | 100.00% |
| Medusa vs Dragunov | 4–2 | 66.67% |
| Medusa vs Lidia | 6–0 | 100.00% |
| Medusa vs Reina | 0–5 | 0.00% |
| Medusa vs Law | 3–1 | 75.00% |
| Medusa vs Asuka | 2–2 | 50.00% |
| Medusa vs Heihachi | 4–0 | 100.00% |
| Medusa vs Anna | 2–2 | 50.00% |
| Medusa vs Xiaoyu | 2–1 | 66.67% |
| Medusa vs Jin | 3–0 | 100.00% |
| Medusa vs Jack-8 | 0–3 | 0.00% |
| Medusa vs Feng | 1–2 | 33.33% |
| Medusa vs Jun | 2–1 | 66.67% |
| Medusa vs Azucena | 1–2 | 33.33% |
| Medusa vs Clive | 0–3 | 0.00% |
| Medusa vs Paul | 2–0 | 100.00% |
| Medusa vs Leo | 2–0 | 100.00% |
| Medusa vs Kuma | 2–0 | 100.00% |
| Medusa vs Zafina | 0–2 | 0.00% |
| Medusa vs Leroy | 0–2 | 0.00% |
| Medusa vs Raven | 0–2 | 0.00% |
| Medusa vs Lars | 0–1 | 0.00% |
| Medusa vs Claudio | 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.