| Mattia vs Steve | 14–8 | 63.64% |
| Mattia vs King | 8–9 | 47.06% |
| Mattia vs Jin | 8–6 | 57.14% |
| Mattia vs Miary Zo | 6–6 | 50.00% |
| Mattia vs Paul | 6–5 | 54.55% |
| Mattia vs Hwoarang | 6–4 | 60.00% |
| Mattia vs Kazuya | 4–6 | 40.00% |
| Mattia vs Armor King | 6–3 | 66.67% |
| Mattia vs Xiaoyu | 6–2 | 75.00% |
| Mattia vs Heihachi | 4–4 | 50.00% |
| Mattia vs Fahkumram | 6–2 | 75.00% |
| Mattia vs Victor | 4–3 | 57.14% |
| Mattia vs Anna | 4–3 | 57.14% |
| Mattia vs Law | 6–0 | 100.00% |
| Mattia vs Asuka | 2–4 | 33.33% |
| Mattia vs Lili | 5–1 | 83.33% |
| Mattia vs Dragunov | 3–3 | 50.00% |
| Mattia vs Bryan | 3–2 | 60.00% |
| Mattia vs Devil Jin | 3–2 | 60.00% |
| Mattia vs Kuma | 4–1 | 80.00% |
| Mattia vs Reina | 1–4 | 20.00% |
| Mattia vs Leo | 3–1 | 75.00% |
| Mattia vs Yoshimitsu | 0–3 | 0.00% |
| Mattia vs Lars | 2–1 | 66.67% |
| Mattia vs Shaheen | 3–0 | 100.00% |
| Mattia vs Lee | 2–1 | 66.67% |
| Mattia vs Jun | 2–1 | 66.67% |
| Mattia vs Clive | 2–1 | 66.67% |
| Mattia vs Nina | 1–0 | 100.00% |
| Mattia vs Zafina | 1–0 | 100.00% |
| Mattia vs Azucena | 0–1 | 0.00% |
| Mattia vs Eddy | 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.