| Piron vs Armor King | 30–34 | 46.88% |
| Piron vs King | 25–21 | 54.35% |
| Piron vs Reina | 24–17 | 58.54% |
| Piron vs Jin | 15–18 | 45.45% |
| Piron vs Kazuya | 20–12 | 62.50% |
| Piron vs Eddy | 10–21 | 32.26% |
| Piron vs Law | 12–16 | 42.86% |
| Piron vs Bryan | 18–10 | 64.29% |
| Piron vs Steve | 18–10 | 64.29% |
| Piron vs Lili | 16–11 | 59.26% |
| Piron vs Heihachi | 13–11 | 54.17% |
| Piron vs Asuka | 9–14 | 39.13% |
| Piron vs Lidia | 6–11 | 35.29% |
| Piron vs Dragunov | 12–4 | 75.00% |
| Piron vs Victor | 10–6 | 62.50% |
| Piron vs Yoshimitsu | 11–4 | 73.33% |
| Piron vs Alisa | 12–3 | 80.00% |
| Piron vs Paul | 11–3 | 78.57% |
| Piron vs Feng | 6–8 | 42.86% |
| Piron vs Fahkumram | 7–5 | 58.33% |
| Piron vs Nina | 7–4 | 63.64% |
| Piron vs Azucena | 7–4 | 63.64% |
| Piron vs Hwoarang | 3–7 | 30.00% |
| Piron vs Lee | 5–5 | 50.00% |
| Piron vs Anna | 6–4 | 60.00% |
| Piron vs Leroy | 5–3 | 62.50% |
| Piron vs Jun | 3–4 | 42.86% |
| Piron vs Xiaoyu | 2–4 | 33.33% |
| Piron vs Miary Zo | 1–5 | 16.67% |
| Piron vs Clive | 4–1 | 80.00% |
| Piron vs Leo | 2–1 | 66.67% |
| Piron vs Claudio | 0–3 | 0.00% |
| Piron vs Raven | 1–2 | 33.33% |
| Piron vs Devil Jin | 0–2 | 0.00% |
| Piron vs Lars | 0–2 | 0.00% |
| Piron vs Shaheen | 0–2 | 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.