| MarsNinja vs King | 8–4 | 66.67% |
| MarsNinja vs Jun | 6–4 | 60.00% |
| MarsNinja vs Reina | 2–8 | 20.00% |
| MarsNinja vs Heihachi | 4–5 | 44.44% |
| MarsNinja vs Paul | 6–1 | 85.71% |
| MarsNinja vs Leo | 5–2 | 71.43% |
| MarsNinja vs Steve | 4–2 | 66.67% |
| MarsNinja vs Jin | 2–2 | 50.00% |
| MarsNinja vs Jack-8 | 0–4 | 0.00% |
| MarsNinja vs Lidia | 4–0 | 100.00% |
| MarsNinja vs Hwoarang | 1–2 | 33.33% |
| MarsNinja vs Dragunov | 1–2 | 33.33% |
| MarsNinja vs Lee | 2–1 | 66.67% |
| MarsNinja vs Yoshimitsu | 2–1 | 66.67% |
| MarsNinja vs Law | 1–1 | 50.00% |
| MarsNinja vs Feng | 0–2 | 0.00% |
| MarsNinja vs Victor | 2–0 | 100.00% |
| MarsNinja vs Raven | 2–0 | 100.00% |
| MarsNinja vs Eddy | 2–0 | 100.00% |
| MarsNinja vs Kazuya | 0–2 | 0.00% |
| MarsNinja vs Devil Jin | 2–0 | 100.00% |
| MarsNinja vs Lars | 2–0 | 100.00% |
| MarsNinja vs Nina | 0–2 | 0.00% |
| MarsNinja vs Xiaoyu | 1–0 | 100.00% |
| MarsNinja vs Asuka | 1–0 | 100.00% |
| MarsNinja vs Lili | 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.