| Pietto vs Armor King | 7–24 | 22.58% |
| Pietto vs Jin | 18–6 | 75.00% |
| Pietto vs King | 11–7 | 61.11% |
| Pietto vs Law | 6–8 | 42.86% |
| Pietto vs Kazuya | 6–6 | 50.00% |
| Pietto vs Bryan | 6–5 | 54.55% |
| Pietto vs Jun | 5–6 | 45.45% |
| Pietto vs Azucena | 10–1 | 90.91% |
| Pietto vs Eddy | 5–5 | 50.00% |
| Pietto vs Paul | 3–6 | 33.33% |
| Pietto vs Hwoarang | 7–2 | 77.78% |
| Pietto vs Dragunov | 8–1 | 88.89% |
| Pietto vs Heihachi | 6–3 | 66.67% |
| Pietto vs Lili | 7–1 | 87.50% |
| Pietto vs Steve | 5–2 | 71.43% |
| Pietto vs Reina | 7–0 | 100.00% |
| Pietto vs Asuka | 2–4 | 33.33% |
| Pietto vs Alisa | 3–3 | 50.00% |
| Pietto vs Lidia | 6–0 | 100.00% |
| Pietto vs Yoshimitsu | 3–2 | 60.00% |
| Pietto vs Lars | 3–2 | 60.00% |
| Pietto vs Lee | 3–2 | 60.00% |
| Pietto vs Xiaoyu | 4–0 | 100.00% |
| Pietto vs Victor | 0–4 | 0.00% |
| Pietto vs Miary Zo | 1–3 | 25.00% |
| Pietto vs Devil Jin | 0–3 | 0.00% |
| Pietto vs Feng | 2–0 | 100.00% |
| Pietto vs Leo | 2–0 | 100.00% |
| Pietto vs Kuma | 0–2 | 0.00% |
| Pietto vs Zafina | 2–0 | 100.00% |
| Pietto vs Raven | 0–2 | 0.00% |
| Pietto vs Clive | 0–2 | 0.00% |
| Pietto vs Jack-8 | 0–1 | 0.00% |
| Pietto 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.