| Effy vs Steve | 11–1 | 91.67% |
| Effy vs Jin | 7–3 | 70.00% |
| Effy vs Kazuya | 7–3 | 70.00% |
| Effy vs Asuka | 8–2 | 80.00% |
| Effy vs Eddy | 5–4 | 55.56% |
| Effy vs Paul | 5–3 | 62.50% |
| Effy vs Xiaoyu | 5–3 | 62.50% |
| Effy vs Reina | 5–2 | 71.43% |
| Effy vs Azucena | 5–2 | 71.43% |
| Effy vs Law | 4–2 | 66.67% |
| Effy vs King | 5–1 | 83.33% |
| Effy vs Yoshimitsu | 4–2 | 66.67% |
| Effy vs Bryan | 5–1 | 83.33% |
| Effy vs Dragunov | 2–4 | 33.33% |
| Effy vs Jack-8 | 2–2 | 50.00% |
| Effy vs Devil Jin | 4–0 | 100.00% |
| Effy vs Lili | 4–0 | 100.00% |
| Effy vs Leo | 2–1 | 66.67% |
| Effy vs Alisa | 3–0 | 100.00% |
| Effy vs Feng | 2–0 | 100.00% |
| Effy vs Nina | 2–0 | 100.00% |
| Effy vs Kuma | 2–0 | 100.00% |
| Effy vs Jun | 2–0 | 100.00% |
| Effy vs Clive | 2–0 | 100.00% |
| Effy vs Fahkumram | 2–0 | 100.00% |
| Effy vs Miary Zo | 2–0 | 100.00% |
| Effy vs Lee | 1–0 | 100.00% |
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.