| Primero vs Fahkumram | 17–1 | 94.44% |
| Primero vs Hwoarang | 14–2 | 87.50% |
| Primero vs Dragunov | 11–1 | 91.67% |
| Primero vs King | 7–0 | 100.00% |
| Primero vs Bryan | 7–0 | 100.00% |
| Primero vs Devil Jin | 6–1 | 85.71% |
| Primero vs Law | 4–2 | 66.67% |
| Primero vs Kazuya | 6–0 | 100.00% |
| Primero vs Heihachi | 5–1 | 83.33% |
| Primero vs Asuka | 4–1 | 80.00% |
| Primero vs Anna | 3–2 | 60.00% |
| Primero vs Jin | 3–0 | 100.00% |
| Primero vs Steve | 3–0 | 100.00% |
| Primero vs Feng | 3–0 | 100.00% |
| Primero vs Lili | 3–0 | 100.00% |
| Primero vs Shaheen | 2–1 | 66.67% |
| Primero vs Jun | 3–0 | 100.00% |
| Primero vs Reina | 3–0 | 100.00% |
| Primero vs Victor | 3–0 | 100.00% |
| Primero vs Clive | 3–0 | 100.00% |
| Primero vs Yoshimitsu | 1–1 | 50.00% |
| Primero vs Leo | 2–0 | 100.00% |
| Primero vs Lee | 1–1 | 50.00% |
| Primero vs Zafina | 2–0 | 100.00% |
| Primero vs Leroy | 2–0 | 100.00% |
| Primero vs Azucena | 2–0 | 100.00% |
| Primero vs Lidia | 2–0 | 100.00% |
| Primero vs Xiaoyu | 1–0 | 100.00% |
| Primero vs Lars | 1–0 | 100.00% |
| Primero vs Alisa | 1–0 | 100.00% |
| Primero vs Nina | 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.