| Buttercup vs King | 4–11 | 26.67% |
| Buttercup vs Dragunov | 0–10 | 0.00% |
| Buttercup vs Azucena | 3–7 | 30.00% |
| Buttercup vs Victor | 1–7 | 12.50% |
| Buttercup vs Yoshimitsu | 1–6 | 14.29% |
| Buttercup vs Kazuya | 1–6 | 14.29% |
| Buttercup vs Law | 1–5 | 16.67% |
| Buttercup vs Hwoarang | 0–6 | 0.00% |
| Buttercup vs Reina | 1–5 | 16.67% |
| Buttercup vs Shaheen | 0–5 | 0.00% |
| Buttercup vs Feng | 2–2 | 50.00% |
| Buttercup vs Leo | 0–4 | 0.00% |
| Buttercup vs Nina | 2–2 | 50.00% |
| Buttercup vs Lee | 2–2 | 50.00% |
| Buttercup vs Kuma | 0–4 | 0.00% |
| Buttercup vs Xiaoyu | 1–2 | 33.33% |
| Buttercup vs Jin | 0–3 | 0.00% |
| Buttercup vs Bryan | 0–3 | 0.00% |
| Buttercup vs Steve | 1–2 | 33.33% |
| Buttercup vs Alisa | 0–3 | 0.00% |
| Buttercup vs Raven | 0–3 | 0.00% |
| Buttercup vs Paul | 0–2 | 0.00% |
| Buttercup vs Lili | 0–2 | 0.00% |
| Buttercup vs Claudio | 0–2 | 0.00% |
| Buttercup vs Jun | 0–2 | 0.00% |
| Buttercup vs Devil Jin | 0–1 | 0.00% |
| Buttercup vs Leroy | 0–1 | 0.00% |
| Buttercup vs Eddy | 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.