| Piernikowy vs King | 3–4 | 42.86% |
| Piernikowy vs Reina | 5–2 | 71.43% |
| Piernikowy vs Jin | 4–2 | 66.67% |
| Piernikowy vs Jun | 3–3 | 50.00% |
| Piernikowy vs Hwoarang | 4–1 | 80.00% |
| Piernikowy vs Eddy | 3–2 | 60.00% |
| Piernikowy vs Miary Zo | 4–1 | 80.00% |
| Piernikowy vs Law | 2–2 | 50.00% |
| Piernikowy vs Bryan | 2–2 | 50.00% |
| Piernikowy vs Kazuya | 4–0 | 100.00% |
| Piernikowy vs Dragunov | 4–0 | 100.00% |
| Piernikowy vs Nina | 3–1 | 75.00% |
| Piernikowy vs Steve | 3–0 | 100.00% |
| Piernikowy vs Lili | 2–1 | 66.67% |
| Piernikowy vs Claudio | 2–1 | 66.67% |
| Piernikowy vs Fahkumram | 3–0 | 100.00% |
| Piernikowy vs Xiaoyu | 2–0 | 100.00% |
| Piernikowy vs Devil Jin | 1–1 | 50.00% |
| Piernikowy vs Panda | 2–0 | 100.00% |
| Piernikowy vs Azucena | 2–0 | 100.00% |
| Piernikowy vs Victor | 2–0 | 100.00% |
| Piernikowy vs Raven | 2–0 | 100.00% |
| Piernikowy vs Lidia | 1–1 | 50.00% |
| Piernikowy vs Heihachi | 2–0 | 100.00% |
| Piernikowy vs Paul | 1–0 | 100.00% |
| Piernikowy vs Yoshimitsu | 1–0 | 100.00% |
| Piernikowy vs Asuka | 1–0 | 100.00% |
| Piernikowy vs Feng | 1–0 | 100.00% |
| Piernikowy vs Lars | 1–0 | 100.00% |
| Piernikowy vs Alisa | 1–0 | 100.00% |
| Piernikowy vs Lee | 1–0 | 100.00% |
| Piernikowy vs Armor King | 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.