| Stefanijack vs Kazuya | 5–10 | 33.33% |
| Stefanijack vs Jin | 2–11 | 15.38% |
| Stefanijack vs Lili | 3–10 | 23.08% |
| Stefanijack vs Leroy | 2–11 | 15.38% |
| Stefanijack vs Reina | 5–8 | 38.46% |
| Stefanijack vs King | 3–8 | 27.27% |
| Stefanijack vs Nina | 2–9 | 18.18% |
| Stefanijack vs Steve | 0–10 | 0.00% |
| Stefanijack vs Victor | 5–5 | 50.00% |
| Stefanijack vs Dragunov | 1–7 | 12.50% |
| Stefanijack vs Paul | 0–5 | 0.00% |
| Stefanijack vs Law | 1–4 | 20.00% |
| Stefanijack vs Zafina | 1–4 | 20.00% |
| Stefanijack vs Bryan | 0–4 | 0.00% |
| Stefanijack vs Feng | 2–2 | 50.00% |
| Stefanijack vs Jun | 1–3 | 25.00% |
| Stefanijack vs Yoshimitsu | 0–3 | 0.00% |
| Stefanijack vs Alisa | 1–2 | 33.33% |
| Stefanijack vs Shaheen | 1–2 | 33.33% |
| Stefanijack vs Jack-8 | 0–2 | 0.00% |
| Stefanijack vs Devil Jin | 1–1 | 50.00% |
| Stefanijack vs Panda | 0–2 | 0.00% |
| Stefanijack vs Lidia | 0–2 | 0.00% |
| Stefanijack vs Xiaoyu | 0–1 | 0.00% |
| Stefanijack vs Claudio | 0–1 | 0.00% |
| Stefanijack vs Eddy | 0–1 | 0.00% |
| Stefanijack vs Clive | 0–1 | 0.00% |
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.