| Gianni vs Heihachi | 18–30 | 37.50% |
| Gianni vs King | 22–13 | 62.86% |
| Gianni vs Reina | 20–15 | 57.14% |
| Gianni vs Law | 14–16 | 46.67% |
| Gianni vs Yoshimitsu | 9–13 | 40.91% |
| Gianni vs Kazuya | 8–12 | 40.00% |
| Gianni vs Bryan | 8–11 | 42.11% |
| Gianni vs Jin | 11–7 | 61.11% |
| Gianni vs Steve | 10–7 | 58.82% |
| Gianni vs Lili | 12–5 | 70.59% |
| Gianni vs Hwoarang | 11–4 | 73.33% |
| Gianni vs Dragunov | 3–12 | 20.00% |
| Gianni vs Shaheen | 7–8 | 46.67% |
| Gianni vs Paul | 2–12 | 14.29% |
| Gianni vs Asuka | 6–7 | 46.15% |
| Gianni vs Jun | 7–6 | 53.85% |
| Gianni vs Nina | 5–7 | 41.67% |
| Gianni vs Victor | 3–9 | 25.00% |
| Gianni vs Lars | 3–8 | 27.27% |
| Gianni vs Azucena | 7–4 | 63.64% |
| Gianni vs Eddy | 6–4 | 60.00% |
| Gianni vs Kuma | 5–4 | 55.56% |
| Gianni vs Leo | 3–2 | 60.00% |
| Gianni vs Jack-8 | 0–4 | 0.00% |
| Gianni vs Devil Jin | 1–3 | 25.00% |
| Gianni vs Feng | 4–0 | 100.00% |
| Gianni vs Alisa | 2–2 | 50.00% |
| Gianni vs Lee | 2–2 | 50.00% |
| Gianni vs Raven | 2–1 | 66.67% |
| Gianni vs Xiaoyu | 0–2 | 0.00% |
| Gianni vs Claudio | 2–0 | 100.00% |
| Gianni vs Leroy | 0–2 | 0.00% |
| Gianni vs Lidia | 1–1 | 50.00% |
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.