| Bumstein vs Reina | 14–10 | 58.33% |
| Bumstein vs Paul | 10–13 | 43.48% |
| Bumstein vs Dragunov | 12–11 | 52.17% |
| Bumstein vs Lili | 11–9 | 55.00% |
| Bumstein vs Hwoarang | 10–9 | 52.63% |
| Bumstein vs Law | 9–9 | 50.00% |
| Bumstein vs Lars | 7–10 | 41.18% |
| Bumstein vs King | 3–12 | 20.00% |
| Bumstein vs Kazuya | 7–7 | 50.00% |
| Bumstein vs Feng | 5–8 | 38.46% |
| Bumstein vs Jin | 5–6 | 45.45% |
| Bumstein vs Steve | 6–5 | 54.55% |
| Bumstein vs Alisa | 9–2 | 81.82% |
| Bumstein vs Azucena | 4–7 | 36.36% |
| Bumstein vs Xiaoyu | 5–5 | 50.00% |
| Bumstein vs Leroy | 5–4 | 55.56% |
| Bumstein vs Devil Jin | 6–2 | 75.00% |
| Bumstein vs Shaheen | 3–5 | 37.50% |
| Bumstein vs Nina | 1–7 | 12.50% |
| Bumstein vs Asuka | 4–3 | 57.14% |
| Bumstein vs Victor | 4–3 | 57.14% |
| Bumstein vs Bryan | 4–2 | 66.67% |
| Bumstein vs Leo | 4–2 | 66.67% |
| Bumstein vs Raven | 4–2 | 66.67% |
| Bumstein vs Yoshimitsu | 2–3 | 40.00% |
| Bumstein vs Zafina | 2–3 | 40.00% |
| Bumstein vs Jack-8 | 1–3 | 25.00% |
| Bumstein vs Kuma | 2–2 | 50.00% |
| Bumstein vs Jun | 3–1 | 75.00% |
| Bumstein vs Lee | 0–2 | 0.00% |
| Bumstein vs Eddy | 1–1 | 50.00% |
| Bumstein vs Claudio | 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.