| Gumm vs King | 13–13 | 50.00% |
| Gumm vs Reina | 10–9 | 52.63% |
| Gumm vs Azucena | 13–6 | 68.42% |
| Gumm vs Jin | 6–8 | 42.86% |
| Gumm vs Bryan | 4–10 | 28.57% |
| Gumm vs Dragunov | 7–7 | 50.00% |
| Gumm vs Asuka | 6–6 | 50.00% |
| Gumm vs Lili | 6–6 | 50.00% |
| Gumm vs Leo | 4–7 | 36.36% |
| Gumm vs Nina | 4–6 | 40.00% |
| Gumm vs Lee | 4–6 | 40.00% |
| Gumm vs Eddy | 3–7 | 30.00% |
| Gumm vs Hwoarang | 3–6 | 33.33% |
| Gumm vs Steve | 4–5 | 44.44% |
| Gumm vs Law | 5–3 | 62.50% |
| Gumm vs Xiaoyu | 3–5 | 37.50% |
| Gumm vs Kuma | 6–2 | 75.00% |
| Gumm vs Heihachi | 6–2 | 75.00% |
| Gumm vs Victor | 4–3 | 57.14% |
| Gumm vs Yoshimitsu | 3–3 | 50.00% |
| Gumm vs Kazuya | 1–5 | 16.67% |
| Gumm vs Miary Zo | 3–3 | 50.00% |
| Gumm vs Claudio | 1–4 | 20.00% |
| Gumm vs Shaheen | 1–4 | 20.00% |
| Gumm vs Leroy | 4–1 | 80.00% |
| Gumm vs Jun | 2–3 | 40.00% |
| Gumm vs Feng | 0–4 | 0.00% |
| Gumm vs Armor King | 4–0 | 100.00% |
| Gumm vs Alisa | 2–1 | 66.67% |
| Gumm vs Raven | 2–1 | 66.67% |
| Gumm vs Jack-8 | 1–1 | 50.00% |
| Gumm vs Panda | 0–2 | 0.00% |
| Gumm vs Lidia | 0–2 | 0.00% |
| Gumm vs Anna | 2–0 | 100.00% |
| Gumm vs Lars | 1–0 | 100.00% |
| Gumm vs Zafina | 1–0 | 100.00% |
| Gumm vs Clive | 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.