| Steffen vs Law | 13–9 | 59.09% |
| Steffen vs Hwoarang | 8–10 | 44.44% |
| Steffen vs King | 10–4 | 71.43% |
| Steffen vs Jin | 9–4 | 69.23% |
| Steffen vs Kazuya | 4–9 | 30.77% |
| Steffen vs Bryan | 3–9 | 25.00% |
| Steffen vs Steve | 10–2 | 83.33% |
| Steffen vs Dragunov | 7–4 | 63.64% |
| Steffen vs Victor | 7–4 | 63.64% |
| Steffen vs Eddy | 4–6 | 40.00% |
| Steffen vs Miary Zo | 4–6 | 40.00% |
| Steffen vs Heihachi | 4–5 | 44.44% |
| Steffen vs Reina | 5–3 | 62.50% |
| Steffen vs Azucena | 5–3 | 62.50% |
| Steffen vs Lili | 5–2 | 71.43% |
| Steffen vs Alisa | 3–4 | 42.86% |
| Steffen vs Armor King | 5–2 | 71.43% |
| Steffen vs Asuka | 3–3 | 50.00% |
| Steffen vs Nina | 1–5 | 16.67% |
| Steffen vs Clive | 2–4 | 33.33% |
| Steffen vs Fahkumram | 4–2 | 66.67% |
| Steffen vs Leo | 3–2 | 60.00% |
| Steffen vs Yoshimitsu | 4–0 | 100.00% |
| Steffen vs Claudio | 2–2 | 50.00% |
| Steffen vs Lidia | 4–0 | 100.00% |
| Steffen vs Xiaoyu | 2–1 | 66.67% |
| Steffen vs Feng | 0–3 | 0.00% |
| Steffen vs Lars | 0–3 | 0.00% |
| Steffen vs Shaheen | 1–2 | 33.33% |
| Steffen vs Lee | 2–1 | 66.67% |
| Steffen vs Raven | 1–2 | 33.33% |
| Steffen vs Devil Jin | 0–2 | 0.00% |
| Steffen vs Leroy | 2–0 | 100.00% |
| Steffen vs Zafina | 1–0 | 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.