| Sion Sena vs King | 30–19 | 61.22% |
| Sion Sena vs Hwoarang | 21–18 | 53.85% |
| Sion Sena vs Reina | 22–9 | 70.97% |
| Sion Sena vs Yoshimitsu | 18–10 | 64.29% |
| Sion Sena vs Kazuya | 14–14 | 50.00% |
| Sion Sena vs Victor | 14–14 | 50.00% |
| Sion Sena vs Jun | 16–10 | 61.54% |
| Sion Sena vs Law | 14–11 | 56.00% |
| Sion Sena vs Jin | 7–16 | 30.43% |
| Sion Sena vs Asuka | 10–13 | 43.48% |
| Sion Sena vs Eddy | 10–11 | 47.62% |
| Sion Sena vs Lili | 8–11 | 42.11% |
| Sion Sena vs Bryan | 12–6 | 66.67% |
| Sion Sena vs Feng | 7–11 | 38.89% |
| Sion Sena vs Lee | 9–9 | 50.00% |
| Sion Sena vs Xiaoyu | 7–8 | 46.67% |
| Sion Sena vs Steve | 9–6 | 60.00% |
| Sion Sena vs Dragunov | 8–7 | 53.33% |
| Sion Sena vs Leo | 5–9 | 35.71% |
| Sion Sena vs Alisa | 9–5 | 64.29% |
| Sion Sena vs Azucena | 10–4 | 71.43% |
| Sion Sena vs Zafina | 2–9 | 18.18% |
| Sion Sena vs Jack-8 | 4–6 | 40.00% |
| Sion Sena vs Lars | 9–1 | 90.00% |
| Sion Sena vs Raven | 7–3 | 70.00% |
| Sion Sena vs Kuma | 5–4 | 55.56% |
| Sion Sena vs Paul | 5–3 | 62.50% |
| Sion Sena vs Devil Jin | 5–3 | 62.50% |
| Sion Sena vs Shaheen | 4–2 | 66.67% |
| Sion Sena vs Nina | 1–4 | 20.00% |
| Sion Sena vs Leroy | 3–2 | 60.00% |
| Sion Sena vs Anna | 1–4 | 20.00% |
| Sion Sena vs Claudio | 2–2 | 50.00% |
| Sion Sena vs Lidia | 2–2 | 50.00% |
| Sion Sena vs Clive | 1–3 | 25.00% |
| Sion Sena vs Panda | 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.