| Gundumb vs Eddy | 7–19 | 26.92% |
| Gundumb vs King | 6–7 | 46.15% |
| Gundumb vs Jin | 11–2 | 84.62% |
| Gundumb vs Jun | 5–6 | 45.45% |
| Gundumb vs Law | 5–5 | 50.00% |
| Gundumb vs Asuka | 3–6 | 33.33% |
| Gundumb vs Feng | 4–5 | 44.44% |
| Gundumb vs Victor | 6–3 | 66.67% |
| Gundumb vs Kazuya | 5–2 | 71.43% |
| Gundumb vs Bryan | 2–4 | 33.33% |
| Gundumb vs Steve | 4–2 | 66.67% |
| Gundumb vs Yoshimitsu | 0–4 | 0.00% |
| Gundumb vs Lili | 2–2 | 50.00% |
| Gundumb vs Leo | 2–2 | 50.00% |
| Gundumb vs Nina | 2–2 | 50.00% |
| Gundumb vs Leroy | 1–3 | 25.00% |
| Gundumb vs Paul | 3–0 | 100.00% |
| Gundumb vs Lars | 1–2 | 33.33% |
| Gundumb vs Shaheen | 1–2 | 33.33% |
| Gundumb vs Lee | 1–2 | 33.33% |
| Gundumb vs Reina | 2–1 | 66.67% |
| Gundumb vs Azucena | 3–0 | 100.00% |
| Gundumb vs Raven | 1–2 | 33.33% |
| Gundumb vs Hwoarang | 1–1 | 50.00% |
| Gundumb vs Xiaoyu | 2–0 | 100.00% |
| Gundumb vs Jack-8 | 1–1 | 50.00% |
| Gundumb vs Devil Jin | 0–2 | 0.00% |
| Gundumb vs Panda | 0–2 | 0.00% |
| Gundumb vs Dragunov | 0–1 | 0.00% |
| Gundumb vs Alisa | 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.