| Charles Vacca vs Steve | 6–7 | 46.15% |
| Charles Vacca vs Asuka | 4–5 | 44.44% |
| Charles Vacca vs Hwoarang | 4–4 | 50.00% |
| Charles Vacca vs Yoshimitsu | 5–2 | 71.43% |
| Charles Vacca vs Law | 0–6 | 0.00% |
| Charles Vacca vs King | 0–6 | 0.00% |
| Charles Vacca vs Reina | 3–3 | 50.00% |
| Charles Vacca vs Xiaoyu | 2–3 | 40.00% |
| Charles Vacca vs Jin | 2–2 | 50.00% |
| Charles Vacca vs Kazuya | 0–3 | 0.00% |
| Charles Vacca vs Dragunov | 2–1 | 66.67% |
| Charles Vacca vs Lars | 1–2 | 33.33% |
| Charles Vacca vs Victor | 2–1 | 66.67% |
| Charles Vacca vs Raven | 1–2 | 33.33% |
| Charles Vacca vs Clive | 2–1 | 66.67% |
| Charles Vacca vs Lee | 0–2 | 0.00% |
| Charles Vacca vs Azucena | 0–2 | 0.00% |
| Charles Vacca vs Eddy | 0–2 | 0.00% |
| Charles Vacca vs Anna | 0–2 | 0.00% |
| Charles Vacca vs Nina | 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.