| Stephmo vs Steve | 10–9 | 52.63% |
| Stephmo vs Lars | 10–4 | 71.43% |
| Stephmo vs Kazuya | 7–5 | 58.33% |
| Stephmo vs Jin | 5–6 | 45.45% |
| Stephmo vs Paul | 2–8 | 20.00% |
| Stephmo vs Law | 5–5 | 50.00% |
| Stephmo vs Bryan | 4–6 | 40.00% |
| Stephmo vs Azucena | 4–6 | 40.00% |
| Stephmo vs Clive | 7–3 | 70.00% |
| Stephmo vs Lee | 2–6 | 25.00% |
| Stephmo vs Heihachi | 3–4 | 42.86% |
| Stephmo vs Armor King | 2–5 | 28.57% |
| Stephmo vs Miary Zo | 3–4 | 42.86% |
| Stephmo vs Jack-8 | 3–3 | 50.00% |
| Stephmo vs Xiaoyu | 1–4 | 20.00% |
| Stephmo vs Lili | 4–1 | 80.00% |
| Stephmo vs Nina | 4–1 | 80.00% |
| Stephmo vs Eddy | 2–3 | 40.00% |
| Stephmo vs King | 2–2 | 50.00% |
| Stephmo vs Yoshimitsu | 2–2 | 50.00% |
| Stephmo vs Dragunov | 2–2 | 50.00% |
| Stephmo vs Reina | 4–0 | 100.00% |
| Stephmo vs Hwoarang | 2–1 | 66.67% |
| Stephmo vs Asuka | 2–1 | 66.67% |
| Stephmo vs Feng | 1–2 | 33.33% |
| Stephmo vs Victor | 2–1 | 66.67% |
| Stephmo vs Anna | 1–2 | 33.33% |
| Stephmo vs Devil Jin | 2–0 | 100.00% |
| Stephmo vs Leo | 0–2 | 0.00% |
| Stephmo vs Shaheen | 1–1 | 50.00% |
| Stephmo vs Leroy | 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.