| Stefon vs Steve | 34–26 | 56.67% |
| Stefon vs King | 24–24 | 50.00% |
| Stefon vs Jin | 24–18 | 57.14% |
| Stefon vs Hwoarang | 23–11 | 67.65% |
| Stefon vs Armor King | 15–19 | 44.12% |
| Stefon vs Law | 14–15 | 48.28% |
| Stefon vs Bryan | 13–16 | 44.83% |
| Stefon vs Kazuya | 12–14 | 46.15% |
| Stefon vs Miary Zo | 7–16 | 30.43% |
| Stefon vs Lars | 8–14 | 36.36% |
| Stefon vs Dragunov | 11–10 | 52.38% |
| Stefon vs Victor | 11–10 | 52.38% |
| Stefon vs Heihachi | 11–9 | 55.00% |
| Stefon vs Yoshimitsu | 10–9 | 52.63% |
| Stefon vs Lili | 10–8 | 55.56% |
| Stefon vs Lidia | 4–13 | 23.53% |
| Stefon vs Jack-8 | 10–6 | 62.50% |
| Stefon vs Reina | 12–2 | 85.71% |
| Stefon vs Jun | 9–4 | 69.23% |
| Stefon vs Paul | 5–7 | 41.67% |
| Stefon vs Nina | 3–9 | 25.00% |
| Stefon vs Azucena | 5–7 | 41.67% |
| Stefon vs Asuka | 6–5 | 54.55% |
| Stefon vs Alisa | 5–5 | 50.00% |
| Stefon vs Anna | 6–4 | 60.00% |
| Stefon vs Shaheen | 7–2 | 77.78% |
| Stefon vs Raven | 6–3 | 66.67% |
| Stefon vs Xiaoyu | 2–6 | 25.00% |
| Stefon vs Leo | 7–1 | 87.50% |
| Stefon vs Devil Jin | 2–5 | 28.57% |
| Stefon vs Leroy | 4–3 | 57.14% |
| Stefon vs Eddy | 1–6 | 14.29% |
| Stefon vs Feng | 0–6 | 0.00% |
| Stefon vs Claudio | 5–1 | 83.33% |
| Stefon vs Lee | 3–3 | 50.00% |
| Stefon vs Kuma | 6–0 | 100.00% |
| Stefon vs Clive | 3–2 | 60.00% |
| Stefon vs Fahkumram | 4–1 | 80.00% |
| Stefon vs Zafina | 2–1 | 66.67% |
| Stefon 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.