| Pietro vs Armor King | 58–75 | 43.61% |
| Pietro vs Law | 62–69 | 47.33% |
| Pietro vs Kazuya | 62–54 | 53.45% |
| Pietro vs King | 50–61 | 45.05% |
| Pietro vs Jin | 45–60 | 42.86% |
| Pietro vs Hwoarang | 48–52 | 48.00% |
| Pietro vs Steve | 44–36–1 | 55.00% |
| Pietro vs Bryan | 42–31 | 57.53% |
| Pietro vs Heihachi | 32–33 | 49.23% |
| Pietro vs Dragunov | 29–30 | 49.15% |
| Pietro vs Jun | 32–26 | 55.17% |
| Pietro vs Lili | 30–24 | 55.56% |
| Pietro vs Yoshimitsu | 18–33 | 35.29% |
| Pietro vs Reina | 27–23 | 54.00% |
| Pietro vs Paul | 27–22 | 55.10% |
| Pietro vs Lee | 24–24 | 50.00% |
| Pietro vs Eddy | 29–18 | 61.70% |
| Pietro vs Fahkumram | 25–19 | 56.82% |
| Pietro vs Victor | 25–17 | 59.52% |
| Pietro vs Devil Jin | 18–22 | 45.00% |
| Pietro vs Miary Zo | 17–21 | 44.74% |
| Pietro vs Feng | 19–14 | 57.58% |
| Pietro vs Nina | 13–17 | 43.33% |
| Pietro vs Asuka | 21–8 | 72.41% |
| Pietro vs Lars | 13–16 | 44.83% |
| Pietro vs Alisa | 15–11 | 57.69% |
| Pietro vs Leroy | 13–13 | 50.00% |
| Pietro vs Clive | 18–8 | 69.23% |
| Pietro vs Anna | 13–13 | 50.00% |
| Pietro vs Azucena | 9–13 | 40.91% |
| Pietro vs Leo | 7–11 | 38.89% |
| Pietro vs Lidia | 11–6 | 64.71% |
| Pietro vs Raven | 9–5 | 64.29% |
| Pietro vs Xiaoyu | 11–2 | 84.62% |
| Pietro vs Jack-8 | 9–3 | 75.00% |
| Pietro vs Kuma | 3–9 | 25.00% |
| Pietro vs Zafina | 6–5 | 54.55% |
| Pietro vs Claudio | 7–3 | 70.00% |
| Pietro vs Shaheen | 4–5 | 44.44% |
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.