| Medusa Shana vs Jin | 10–5 | 66.67% |
| Medusa Shana vs Heihachi | 5–3 | 62.50% |
| Medusa Shana vs Bryan | 4–3 | 57.14% |
| Medusa Shana vs Anna | 5–2 | 71.43% |
| Medusa Shana vs King | 6–0 | 100.00% |
| Medusa Shana vs Asuka | 3–3 | 50.00% |
| Medusa Shana vs Steve | 3–2 | 60.00% |
| Medusa Shana vs Dragunov | 5–0 | 100.00% |
| Medusa Shana vs Kuma | 3–2 | 60.00% |
| Medusa Shana vs Reina | 4–1 | 80.00% |
| Medusa Shana vs Eddy | 2–3 | 40.00% |
| Medusa Shana vs Law | 3–1 | 75.00% |
| Medusa Shana vs Yoshimitsu | 3–1 | 75.00% |
| Medusa Shana vs Leo | 4–0 | 100.00% |
| Medusa Shana vs Lars | 3–1 | 75.00% |
| Medusa Shana vs Jack-8 | 2–1 | 66.67% |
| Medusa Shana vs Alisa | 3–0 | 100.00% |
| Medusa Shana vs Lee | 2–1 | 66.67% |
| Medusa Shana vs Zafina | 3–0 | 100.00% |
| Medusa Shana vs Jun | 3–0 | 100.00% |
| Medusa Shana vs Azucena | 2–1 | 66.67% |
| Medusa Shana vs Paul | 2–0 | 100.00% |
| Medusa Shana vs Kazuya | 2–0 | 100.00% |
| Medusa Shana vs Lili | 1–1 | 50.00% |
| Medusa Shana vs Nina | 1–1 | 50.00% |
| Medusa Shana vs Victor | 2–0 | 100.00% |
| Medusa Shana vs Hwoarang | 1–0 | 100.00% |
| Medusa Shana vs Xiaoyu | 1–0 | 100.00% |
| Medusa Shana vs Devil Jin | 1–0 | 100.00% |
| Medusa Shana vs Leroy | 0–1 | 0.00% |
| Medusa Shana vs Raven | 1–0 | 100.00% |
| Medusa Shana vs Lidia | 0–1 | 0.00% |
| Medusa Shana vs Clive | 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.