| Ephemeros vs Jin | 66–64 | 50.77% |
| Ephemeros vs Kazuya | 56–72 | 43.75% |
| Ephemeros vs King | 69–34 | 66.99% |
| Ephemeros vs Hwoarang | 42–41 | 50.60% |
| Ephemeros vs Bryan | 39–38 | 50.65% |
| Ephemeros vs Law | 43–23 | 65.15% |
| Ephemeros vs Heihachi | 29–35 | 45.31% |
| Ephemeros vs Reina | 32–31 | 50.79% |
| Ephemeros vs Steve | 26–35 | 42.62% |
| Ephemeros vs Paul | 27–28 | 49.09% |
| Ephemeros vs Dragunov | 22–28 | 44.00% |
| Ephemeros vs Fahkumram | 15–34 | 30.61% |
| Ephemeros vs Eddy | 17–27 | 38.64% |
| Ephemeros vs Lili | 16–26 | 38.10% |
| Ephemeros vs Lee | 16–21 | 43.24% |
| Ephemeros vs Armor King | 20–17 | 54.05% |
| Ephemeros vs Yoshimitsu | 13–22 | 37.14% |
| Ephemeros vs Asuka | 18–14 | 56.25% |
| Ephemeros vs Jun | 10–22 | 31.25% |
| Ephemeros vs Clive | 17–15 | 53.12% |
| Ephemeros vs Lidia | 17–14 | 54.84% |
| Ephemeros vs Devil Jin | 14–15 | 48.28% |
| Ephemeros vs Nina | 11–17 | 39.29% |
| Ephemeros vs Lars | 11–16 | 40.74% |
| Ephemeros vs Anna | 10–15 | 40.00% |
| Ephemeros vs Jack-8 | 8–16 | 33.33% |
| Ephemeros vs Feng | 13–11 | 54.17% |
| Ephemeros vs Xiaoyu | 11–12 | 47.83% |
| Ephemeros vs Alisa | 11–11 | 50.00% |
| Ephemeros vs Claudio | 7–14 | 33.33% |
| Ephemeros vs Leo | 12–8 | 60.00% |
| Ephemeros vs Victor | 17–3 | 85.00% |
| Ephemeros vs Zafina | 11–8 | 57.89% |
| Ephemeros vs Kuma | 8–9 | 47.06% |
| Ephemeros vs Azucena | 8–6 | 57.14% |
| Ephemeros vs Raven | 4–9 | 30.77% |
| Ephemeros vs Miary Zo | 6–7 | 46.15% |
| Ephemeros vs Leroy | 4–8 | 33.33% |
| Ephemeros vs Shaheen | 6–3 | 66.67% |
| Ephemeros vs Panda | 2–1 | 66.67% |
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.