| Arca vs Reina | 10–3 | 76.92% |
| Arca vs Feng | 6–4 | 60.00% |
| Arca vs Jin | 6–2 | 75.00% |
| Arca vs Paul | 3–4 | 42.86% |
| Arca vs Law | 4–2 | 66.67% |
| Arca vs Kazuya | 2–4 | 33.33% |
| Arca vs Steve | 6–0 | 100.00% |
| Arca vs Lili | 4–2 | 66.67% |
| Arca vs Dragunov | 2–4 | 33.33% |
| Arca vs Hwoarang | 2–3 | 40.00% |
| Arca vs Xiaoyu | 3–2 | 60.00% |
| Arca vs Bryan | 0–5 | 0.00% |
| Arca vs Lidia | 1–4 | 20.00% |
| Arca vs Leo | 0–4 | 0.00% |
| Arca vs Nina | 2–2 | 50.00% |
| Arca vs Azucena | 2–2 | 50.00% |
| Arca vs Asuka | 2–1 | 66.67% |
| Arca vs Claudio | 2–1 | 66.67% |
| Arca vs Lee | 2–1 | 66.67% |
| Arca vs Kuma | 1–2 | 33.33% |
| Arca vs Jun | 3–0 | 100.00% |
| Arca vs Yoshimitsu | 0–2 | 0.00% |
| Arca vs Lars | 0–2 | 0.00% |
| Arca vs Panda | 0–2 | 0.00% |
| Arca vs Eddy | 0–2 | 0.00% |
| Arca vs King | 1–0 | 100.00% |
| Arca vs Devil Jin | 1–0 | 100.00% |
| Arca vs Shaheen | 1–0 | 100.00% |
| Arca vs Victor | 1–0 | 100.00% |
| Arca vs Heihachi | 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.