| Kumstein vs Jin | 35–38 | 47.95% |
| Kumstein vs Bryan | 35–24 | 59.32% |
| Kumstein vs Kazuya | 31–27 | 53.45% |
| Kumstein vs King | 28–21 | 57.14% |
| Kumstein vs Reina | 21–28 | 42.86% |
| Kumstein vs Steve | 25–17 | 59.52% |
| Kumstein vs Lili | 23–18–1 | 56.10% |
| Kumstein vs Hwoarang | 16–23 | 41.03% |
| Kumstein vs Dragunov | 20–17 | 54.05% |
| Kumstein vs Law | 16–18 | 47.06% |
| Kumstein vs Eddy | 11–22 | 33.33% |
| Kumstein vs Jun | 16–16 | 50.00% |
| Kumstein vs Asuka | 16–13 | 55.17% |
| Kumstein vs Heihachi | 16–13 | 55.17% |
| Kumstein vs Lars | 13–15 | 46.43% |
| Kumstein vs Jack-8 | 12–15 | 44.44% |
| Kumstein vs Victor | 11–13 | 45.83% |
| Kumstein vs Clive | 11–12 | 47.83% |
| Kumstein vs Devil Jin | 10–12 | 45.45% |
| Kumstein vs Feng | 9–11 | 45.00% |
| Kumstein vs Claudio | 9–11 | 45.00% |
| Kumstein vs Leo | 5–13 | 27.78% |
| Kumstein vs Nina | 8–9 | 47.06% |
| Kumstein vs Lee | 9–8 | 52.94% |
| Kumstein vs Yoshimitsu | 8–8 | 50.00% |
| Kumstein vs Xiaoyu | 11–5 | 68.75% |
| Kumstein vs Azucena | 8–8 | 50.00% |
| Kumstein vs Lidia | 7–9 | 43.75% |
| Kumstein vs Leroy | 11–4 | 73.33% |
| Kumstein vs Raven | 6–9 | 40.00% |
| Kumstein vs Paul | 8–5 | 61.54% |
| Kumstein vs Alisa | 4–4 | 50.00% |
| Kumstein vs Shaheen | 4–2 | 66.67% |
| Kumstein vs Miary Zo | 2–3 | 40.00% |
| Kumstein vs Zafina | 0–4 | 0.00% |
| Kumstein vs Panda | 0–3 | 0.00% |
| Kumstein vs Kuma | 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.