| Piero vs Azucena | 4–4 | 50.00% |
| Piero vs Hwoarang | 2–3 | 40.00% |
| Piero vs Kazuya | 3–2 | 60.00% |
| Piero vs Steve | 4–1 | 80.00% |
| Piero vs Jin | 0–3 | 0.00% |
| Piero vs Lars | 2–0 | 100.00% |
| Piero vs Zafina | 1–1 | 50.00% |
| Piero vs Leroy | 1–1 | 50.00% |
| Piero vs Armor King | 0–2 | 0.00% |
| Piero vs Paul | 1–0 | 100.00% |
| Piero vs King | 0–1 | 0.00% |
| Piero vs Devil Jin | 0–1 | 0.00% |
| Piero vs Panda | 1–0 | 100.00% |
| Piero vs Victor | 0–1 | 0.00% |
| Piero vs Miary Zo | 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.