| Mars Slayer vs Steve | 30–21 | 58.82% |
| Mars Slayer vs Jin | 18–18 | 50.00% |
| Mars Slayer vs King | 20–11 | 64.52% |
| Mars Slayer vs Dragunov | 17–14 | 54.84% |
| Mars Slayer vs Reina | 16–15 | 51.61% |
| Mars Slayer vs Eddy | 20–10 | 66.67% |
| Mars Slayer vs Armor King | 10–19 | 34.48% |
| Mars Slayer vs Yoshimitsu | 16–11 | 59.26% |
| Mars Slayer vs Asuka | 12–13 | 48.00% |
| Mars Slayer vs Paul | 11–13 | 45.83% |
| Mars Slayer vs Kazuya | 14–9 | 60.87% |
| Mars Slayer vs Lidia | 14–6 | 70.00% |
| Mars Slayer vs Miary Zo | 10–9 | 52.63% |
| Mars Slayer vs Law | 14–3 | 82.35% |
| Mars Slayer vs Lili | 8–8 | 50.00% |
| Mars Slayer vs Lars | 5–11 | 31.25% |
| Mars Slayer vs Hwoarang | 9–6 | 60.00% |
| Mars Slayer vs Devil Jin | 8–7 | 53.33% |
| Mars Slayer vs Azucena | 9–4 | 69.23% |
| Mars Slayer vs Xiaoyu | 5–7 | 41.67% |
| Mars Slayer vs Feng | 7–5 | 58.33% |
| Mars Slayer vs Claudio | 4–8 | 33.33% |
| Mars Slayer vs Jun | 7–5 | 58.33% |
| Mars Slayer vs Victor | 7–5 | 58.33% |
| Mars Slayer vs Clive | 5–5 | 50.00% |
| Mars Slayer vs Anna | 4–5 | 44.44% |
| Mars Slayer vs Fahkumram | 4–5 | 44.44% |
| Mars Slayer vs Alisa | 4–3 | 57.14% |
| Mars Slayer vs Lee | 6–1 | 85.71% |
| Mars Slayer vs Leroy | 3–4 | 42.86% |
| Mars Slayer vs Heihachi | 5–2 | 71.43% |
| Mars Slayer vs Bryan | 4–2 | 66.67% |
| Mars Slayer vs Nina | 4–2 | 66.67% |
| Mars Slayer vs Leo | 1–4 | 20.00% |
| Mars Slayer vs Jack-8 | 2–0 | 100.00% |
| Mars Slayer vs Kuma | 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.