| Ruthless vs Kazuya | 189–182 | 50.94% |
| Ruthless vs King | 124–135 | 47.88% |
| Ruthless vs Jin | 105–132 | 44.30% |
| Ruthless vs Reina | 100–112 | 47.17% |
| Ruthless vs Steve | 79–109 | 42.02% |
| Ruthless vs Law | 87–85 | 50.58% |
| Ruthless vs Bryan | 74–95 | 43.79% |
| Ruthless vs Hwoarang | 72–90 | 44.44% |
| Ruthless vs Dragunov | 61–81 | 42.96% |
| Ruthless vs Lili | 62–69 | 47.33% |
| Ruthless vs Armor King | 65–57 | 53.28% |
| Ruthless vs Heihachi | 45–76 | 37.19% |
| Ruthless vs Asuka | 52–54 | 49.06% |
| Ruthless vs Devil Jin | 53–53 | 50.00% |
| Ruthless vs Azucena | 48–54 | 47.06% |
| Ruthless vs Yoshimitsu | 34–62 | 35.42% |
| Ruthless vs Lee | 35–57 | 38.04% |
| Ruthless vs Jun | 48–43 | 52.75% |
| Ruthless vs Lars | 46–44 | 51.11% |
| Ruthless vs Lidia | 40–48 | 45.45% |
| Ruthless vs Paul | 26–60 | 30.23% |
| Ruthless vs Fahkumram | 34–48 | 41.46% |
| Ruthless vs Clive | 41–38 | 51.90% |
| Ruthless vs Eddy | 32–45 | 41.56% |
| Ruthless vs Xiaoyu | 24–52 | 31.58% |
| Ruthless vs Nina | 25–36 | 40.98% |
| Ruthless vs Feng | 19–36 | 34.55% |
| Ruthless vs Victor | 31–23 | 57.41% |
| Ruthless vs Alisa | 32–13 | 71.11% |
| Ruthless vs Leroy | 16–29 | 35.56% |
| Ruthless vs Anna | 18–19 | 48.65% |
| Ruthless vs Jack-8 | 18–18 | 50.00% |
| Ruthless vs Leo | 17–17 | 50.00% |
| Ruthless vs Claudio | 17–16 | 51.52% |
| Ruthless vs Kuma | 9–16 | 36.00% |
| Ruthless vs Raven | 7–18 | 28.00% |
| Ruthless vs Panda | 10–11 | 47.62% |
| Ruthless vs Zafina | 6–14 | 30.00% |
| Ruthless vs Miary Zo | 13–4 | 76.47% |
| Ruthless vs Shaheen | 4–10 | 28.57% |
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.