| Efekan vs Clive | 10–11 | 47.62% |
| Efekan vs King | 10–9 | 52.63% |
| Efekan vs Lili | 4–14 | 22.22% |
| Efekan vs Kazuya | 10–6 | 62.50% |
| Efekan vs Steve | 10–6 | 62.50% |
| Efekan vs Victor | 5–9 | 35.71% |
| Efekan vs Asuka | 2–9 | 18.18% |
| Efekan vs Eddy | 5–6 | 45.45% |
| Efekan vs Jin | 5–3 | 62.50% |
| Efekan vs Reina | 7–1 | 87.50% |
| Efekan vs Jack-8 | 2–5 | 28.57% |
| Efekan vs Law | 1–5 | 16.67% |
| Efekan vs Hwoarang | 4–2 | 66.67% |
| Efekan vs Bryan | 3–3 | 50.00% |
| Efekan vs Dragunov | 5–1 | 83.33% |
| Efekan vs Leo | 3–3 | 50.00% |
| Efekan vs Lidia | 3–2 | 60.00% |
| Efekan vs Heihachi | 2–3 | 40.00% |
| Efekan vs Lee | 0–4 | 0.00% |
| Efekan vs Azucena | 2–2 | 50.00% |
| Efekan vs Xiaoyu | 0–3 | 0.00% |
| Efekan vs Devil Jin | 1–2 | 33.33% |
| Efekan vs Feng | 2–1 | 66.67% |
| Efekan vs Alisa | 0–3 | 0.00% |
| Efekan vs Shaheen | 2–1 | 66.67% |
| Efekan vs Raven | 1–2 | 33.33% |
| Efekan vs Paul | 2–0 | 100.00% |
| Efekan vs Kuma | 0–2 | 0.00% |
| Efekan vs Zafina | 2–0 | 100.00% |
| Efekan vs Nina | 1–0 | 100.00% |
| Efekan vs Jun | 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.