| Mattias vs Reina | 14–15 | 48.28% |
| Mattias vs Jin | 15–7 | 68.18% |
| Mattias vs Hwoarang | 11–10 | 52.38% |
| Mattias vs Kazuya | 8–9 | 47.06% |
| Mattias vs Steve | 9–5 | 64.29% |
| Mattias vs King | 7–4 | 63.64% |
| Mattias vs Asuka | 4–6 | 40.00% |
| Mattias vs Eddy | 4–6 | 40.00% |
| Mattias vs Leroy | 5–3 | 62.50% |
| Mattias vs Paul | 5–2 | 71.43% |
| Mattias vs Dragunov | 2–5 | 28.57% |
| Mattias vs Bryan | 3–3 | 50.00% |
| Mattias vs Law | 4–1 | 80.00% |
| Mattias vs Lili | 2–3 | 40.00% |
| Mattias vs Lee | 2–3 | 40.00% |
| Mattias vs Raven | 3–2 | 60.00% |
| Mattias vs Lidia | 3–2 | 60.00% |
| Mattias vs Heihachi | 4–1 | 80.00% |
| Mattias vs Xiaoyu | 2–2 | 50.00% |
| Mattias vs Alisa | 1–3 | 25.00% |
| Mattias vs Claudio | 3–1 | 75.00% |
| Mattias vs Nina | 1–3 | 25.00% |
| Mattias vs Yoshimitsu | 2–1 | 66.67% |
| Mattias vs Jack-8 | 1–2 | 33.33% |
| Mattias vs Devil Jin | 0–3 | 0.00% |
| Mattias vs Panda | 2–1 | 66.67% |
| Mattias vs Jun | 3–0 | 100.00% |
| Mattias vs Victor | 1–2 | 33.33% |
| Mattias vs Leo | 2–0 | 100.00% |
| Mattias vs Lars | 0–2 | 0.00% |
| Mattias vs Kuma | 2–0 | 100.00% |
| Mattias vs Zafina | 0–2 | 0.00% |
| Mattias vs Azucena | 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.