| Pirarrta vs Jin | 15–24 | 38.46% |
| Pirarrta vs Reina | 20–16 | 55.56% |
| Pirarrta vs Lili | 17–17 | 50.00% |
| Pirarrta vs Kazuya | 12–19 | 38.71% |
| Pirarrta vs Hwoarang | 12–18 | 40.00% |
| Pirarrta vs King | 12–17 | 41.38% |
| Pirarrta vs Steve | 16–9 | 64.00% |
| Pirarrta vs Paul | 11–12 | 47.83% |
| Pirarrta vs Eddy | 3–16 | 15.79% |
| Pirarrta vs Yoshimitsu | 6–12 | 33.33% |
| Pirarrta vs Alisa | 7–11 | 38.89% |
| Pirarrta vs Jun | 9–9 | 50.00% |
| Pirarrta vs Law | 6–11 | 35.29% |
| Pirarrta vs Bryan | 8–9 | 47.06% |
| Pirarrta vs Asuka | 7–10 | 41.18% |
| Pirarrta vs Azucena | 10–7 | 58.82% |
| Pirarrta vs Victor | 10–5 | 66.67% |
| Pirarrta vs Lars | 5–8 | 38.46% |
| Pirarrta vs Devil Jin | 5–7 | 41.67% |
| Pirarrta vs Lee | 7–5 | 58.33% |
| Pirarrta vs Dragunov | 3–7 | 30.00% |
| Pirarrta vs Nina | 4–5 | 44.44% |
| Pirarrta vs Claudio | 5–3 | 62.50% |
| Pirarrta vs Leroy | 1–6 | 14.29% |
| Pirarrta vs Xiaoyu | 4–2 | 66.67% |
| Pirarrta vs Jack-8 | 0–4 | 0.00% |
| Pirarrta vs Kuma | 1–3 | 25.00% |
| Pirarrta vs Panda | 2–2 | 50.00% |
| Pirarrta vs Zafina | 2–2 | 50.00% |
| Pirarrta vs Raven | 2–2 | 50.00% |
| Pirarrta vs Leo | 1–2 | 33.33% |
| Pirarrta vs Shaheen | 1–2 | 33.33% |
| Pirarrta vs Lidia | 1–2 | 33.33% |
| Pirarrta vs Feng | 0–2 | 0.00% |
| Pirarrta vs Miary Zo | 0–2 | 0.00% |
| Pirarrta vs Clive | 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.