| Efialths vs Kazuya | 158–112 | 58.52% |
| Efialths vs Bryan | 128–69 | 64.97% |
| Efialths vs Jin | 119–64 | 65.03% |
| Efialths vs Reina | 86–58 | 59.72% |
| Efialths vs Dragunov | 70–58–1 | 54.69% |
| Efialths vs King | 78–41 | 65.55% |
| Efialths vs Paul | 51–48 | 51.52% |
| Efialths vs Law | 46–49 | 48.42% |
| Efialths vs Steve | 48–47 | 50.53% |
| Efialths vs Devil Jin | 54–38 | 58.70% |
| Efialths vs Hwoarang | 63–28 | 69.23% |
| Efialths vs Yoshimitsu | 49–41 | 54.44% |
| Efialths vs Jun | 43–28 | 60.56% |
| Efialths vs Lili | 34–35 | 49.28% |
| Efialths vs Lee | 36–30 | 54.55% |
| Efialths vs Lidia | 37–29 | 56.06% |
| Efialths vs Asuka | 40–21 | 65.57% |
| Efialths vs Leroy | 29–31 | 48.33% |
| Efialths vs Xiaoyu | 28–26 | 51.85% |
| Efialths vs Azucena | 21–33 | 38.89% |
| Efialths vs Eddy | 21–33 | 38.89% |
| Efialths vs Feng | 29–23 | 55.77% |
| Efialths vs Victor | 27–22 | 55.10% |
| Efialths vs Jack-8 | 19–27 | 41.30% |
| Efialths vs Heihachi | 30–13 | 69.77% |
| Efialths vs Lars | 17–22 | 43.59% |
| Efialths vs Claudio | 15–24 | 38.46% |
| Efialths vs Shaheen | 18–17 | 51.43% |
| Efialths vs Nina | 13–20 | 39.39% |
| Efialths vs Raven | 14–15 | 48.28% |
| Efialths vs Alisa | 10–15 | 40.00% |
| Efialths vs Armor King | 15–6 | 71.43% |
| Efialths vs Kuma | 11–7 | 61.11% |
| Efialths vs Leo | 9–7 | 56.25% |
| Efialths vs Miary Zo | 9–7 | 56.25% |
| Efialths vs Panda | 7–7 | 50.00% |
| Efialths vs Zafina | 5–6 | 45.45% |
| Efialths vs Clive | 2–5 | 28.57% |
| Efialths vs Fahkumram | 5–2 | 71.43% |
| Efialths vs Anna | 2–4 | 33.33% |
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.