| Ruthless killer vs King | 25–20 | 55.56% |
| Ruthless killer vs Jin | 16–15 | 51.61% |
| Ruthless killer vs Hwoarang | 18–12 | 60.00% |
| Ruthless killer vs Steve | 18–10 | 64.29% |
| Ruthless killer vs Lili | 19–8 | 70.37% |
| Ruthless killer vs Law | 19–7 | 73.08% |
| Ruthless killer vs Kazuya | 12–11 | 52.17% |
| Ruthless killer vs Asuka | 12–11 | 52.17% |
| Ruthless killer vs Heihachi | 11–11 | 50.00% |
| Ruthless killer vs Reina | 16–5 | 76.19% |
| Ruthless killer vs Jun | 13–7 | 65.00% |
| Ruthless killer vs Clive | 14–6 | 70.00% |
| Ruthless killer vs Dragunov | 17–2 | 89.47% |
| Ruthless killer vs Azucena | 11–8 | 57.89% |
| Ruthless killer vs Bryan | 9–9 | 50.00% |
| Ruthless killer vs Leroy | 12–6 | 66.67% |
| Ruthless killer vs Victor | 11–7 | 61.11% |
| Ruthless killer vs Fahkumram | 10–7 | 58.82% |
| Ruthless killer vs Nina | 6–10 | 37.50% |
| Ruthless killer vs Devil Jin | 5–10 | 33.33% |
| Ruthless killer vs Paul | 9–5 | 64.29% |
| Ruthless killer vs Lars | 5–8 | 38.46% |
| Ruthless killer vs Yoshimitsu | 7–5 | 58.33% |
| Ruthless killer vs Jack-8 | 4–8 | 33.33% |
| Ruthless killer vs Eddy | 7–3 | 70.00% |
| Ruthless killer vs Armor King | 4–6 | 40.00% |
| Ruthless killer vs Anna | 6–3 | 66.67% |
| Ruthless killer vs Miary Zo | 2–7 | 22.22% |
| Ruthless killer vs Leo | 4–4 | 50.00% |
| Ruthless killer vs Lidia | 4–4 | 50.00% |
| Ruthless killer vs Lee | 4–3 | 57.14% |
| Ruthless killer vs Raven | 2–5 | 28.57% |
| Ruthless killer vs Alisa | 3–3 | 50.00% |
| Ruthless killer vs Claudio | 4–2 | 66.67% |
| Ruthless killer vs Shaheen | 6–0 | 100.00% |
| Ruthless killer vs Feng | 0–5 | 0.00% |
| Ruthless killer vs Zafina | 3–2 | 60.00% |
| Ruthless killer vs Xiaoyu | 2–2 | 50.00% |
| Ruthless killer vs Kuma | 2–0 | 100.00% |
| Ruthless killer 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.