| Efekuso vs King | 13–19 | 40.62% |
| Efekuso vs Hwoarang | 13–16 | 44.83% |
| Efekuso vs Jin | 10–18 | 35.71% |
| Efekuso vs Clive | 16–12 | 57.14% |
| Efekuso vs Lee | 14–12 | 53.85% |
| Efekuso vs Yoshimitsu | 19–6 | 76.00% |
| Efekuso vs Kazuya | 14–10 | 58.33% |
| Efekuso vs Dragunov | 16–7 | 69.57% |
| Efekuso vs Lars | 12–9 | 57.14% |
| Efekuso vs Paul | 5–11 | 31.25% |
| Efekuso vs Steve | 8–8 | 50.00% |
| Efekuso vs Devil Jin | 11–5 | 68.75% |
| Efekuso vs Lili | 11–5 | 68.75% |
| Efekuso vs Reina | 7–8 | 46.67% |
| Efekuso vs Bryan | 8–6 | 57.14% |
| Efekuso vs Asuka | 9–4 | 69.23% |
| Efekuso vs Alisa | 7–6 | 53.85% |
| Efekuso vs Feng | 7–5 | 58.33% |
| Efekuso vs Zafina | 3–9 | 25.00% |
| Efekuso vs Law | 5–5 | 50.00% |
| Efekuso vs Jack-8 | 5–4 | 55.56% |
| Efekuso vs Azucena | 6–3 | 66.67% |
| Efekuso vs Claudio | 6–2 | 75.00% |
| Efekuso vs Jun | 4–4 | 50.00% |
| Efekuso vs Raven | 5–1 | 83.33% |
| Efekuso vs Xiaoyu | 2–3 | 40.00% |
| Efekuso vs Shaheen | 2–3 | 40.00% |
| Efekuso vs Nina | 4–1 | 80.00% |
| Efekuso vs Eddy | 2–3 | 40.00% |
| Efekuso vs Lidia | 2–2 | 50.00% |
| Efekuso vs Leroy | 1–2 | 33.33% |
| Efekuso vs Heihachi | 2–1 | 66.67% |
| Efekuso vs Victor | 2–0 | 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.