| Stefan vs Kazuya | 113–85 | 57.07% |
| Stefan vs King | 82–65 | 55.78% |
| Stefan vs Jin | 75–71 | 51.37% |
| Stefan vs Bryan | 62–62 | 50.00% |
| Stefan vs Dragunov | 37–53 | 41.11% |
| Stefan vs Lidia | 38–49 | 43.68% |
| Stefan vs Heihachi | 40–43 | 48.19% |
| Stefan vs Yoshimitsu | 29–40 | 42.03% |
| Stefan vs Steve | 29–38 | 43.28% |
| Stefan vs Hwoarang | 33–32 | 50.77% |
| Stefan vs Paul | 23–39 | 37.10% |
| Stefan vs Reina | 26–35 | 42.62% |
| Stefan vs Law | 27–29 | 48.21% |
| Stefan vs Azucena | 19–35 | 35.19% |
| Stefan vs Devil Jin | 27–26 | 50.94% |
| Stefan vs Lili | 21–30 | 41.18% |
| Stefan vs Feng | 18–30 | 37.50% |
| Stefan vs Lee | 19–26 | 42.22% |
| Stefan vs Victor | 20–21 | 48.78% |
| Stefan vs Eddy | 12–27 | 30.77% |
| Stefan vs Lars | 24–11 | 68.57% |
| Stefan vs Asuka | 12–22 | 35.29% |
| Stefan vs Alisa | 17–14 | 54.84% |
| Stefan vs Claudio | 13–14 | 48.15% |
| Stefan vs Nina | 14–9 | 60.87% |
| Stefan vs Jun | 11–10 | 52.38% |
| Stefan vs Jack-8 | 14–6 | 70.00% |
| Stefan vs Shaheen | 10–9 | 52.63% |
| Stefan vs Leroy | 5–14 | 26.32% |
| Stefan vs Raven | 10–8 | 55.56% |
| Stefan vs Xiaoyu | 8–8 | 50.00% |
| Stefan vs Kuma | 7–9 | 43.75% |
| Stefan vs Leo | 5–8 | 38.46% |
| Stefan vs Zafina | 4–7 | 36.36% |
| Stefan vs Clive | 2–2 | 50.00% |
| Stefan vs Panda | 0–3 | 0.00% |
| Stefan vs Anna | 1–2 | 33.33% |
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.