| Itabashi Gunmii vs Eddy | 12–28 | 30.00% |
| Itabashi Gunmii vs Azucena | 16–12 | 57.14% |
| Itabashi Gunmii vs King | 11–15 | 42.31% |
| Itabashi Gunmii vs Jin | 14–11 | 56.00% |
| Itabashi Gunmii vs Kazuya | 11–7 | 61.11% |
| Itabashi Gunmii vs Hwoarang | 12–5 | 70.59% |
| Itabashi Gunmii vs Bryan | 9–8 | 52.94% |
| Itabashi Gunmii vs Law | 6–10 | 37.50% |
| Itabashi Gunmii vs Jun | 11–5 | 68.75% |
| Itabashi Gunmii vs Steve | 9–4 | 69.23% |
| Itabashi Gunmii vs Reina | 6–6 | 50.00% |
| Itabashi Gunmii vs Lili | 4–7 | 36.36% |
| Itabashi Gunmii vs Devil Jin | 5–5 | 50.00% |
| Itabashi Gunmii vs Leo | 5–5 | 50.00% |
| Itabashi Gunmii vs Nina | 2–7 | 22.22% |
| Itabashi Gunmii vs Kuma | 4–5 | 44.44% |
| Itabashi Gunmii vs Paul | 1–7 | 12.50% |
| Itabashi Gunmii vs Yoshimitsu | 3–5 | 37.50% |
| Itabashi Gunmii vs Dragunov | 3–5 | 37.50% |
| Itabashi Gunmii vs Panda | 3–5 | 37.50% |
| Itabashi Gunmii vs Asuka | 3–3 | 50.00% |
| Itabashi Gunmii vs Alisa | 4–2 | 66.67% |
| Itabashi Gunmii vs Victor | 2–4 | 33.33% |
| Itabashi Gunmii vs Xiaoyu | 2–3 | 40.00% |
| Itabashi Gunmii vs Raven | 4–1 | 80.00% |
| Itabashi Gunmii vs Fahkumram | 2–3 | 40.00% |
| Itabashi Gunmii vs Jack-8 | 3–1 | 75.00% |
| Itabashi Gunmii vs Claudio | 3–1 | 75.00% |
| Itabashi Gunmii vs Lee | 2–2 | 50.00% |
| Itabashi Gunmii vs Lars | 2–1 | 66.67% |
| Itabashi Gunmii vs Clive | 2–1 | 66.67% |
| Itabashi Gunmii vs Feng | 0–1 | 0.00% |
| Itabashi Gunmii vs Shaheen | 0–1 | 0.00% |
| Itabashi Gunmii vs Leroy | 1–0 | 100.00% |
| Itabashi Gunmii vs Lidia | 1–0 | 100.00% |
| Itabashi Gunmii vs Heihachi | 1–0 | 100.00% |
| Itabashi Gunmii vs Anna | 0–1 | 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.