| IEphimetheus vs Kazuya | 10–5 | 66.67% |
| IEphimetheus vs Lili | 10–3 | 76.92% |
| IEphimetheus vs King | 8–2 | 80.00% |
| IEphimetheus vs Bryan | 4–5 | 44.44% |
| IEphimetheus vs Steve | 6–3 | 66.67% |
| IEphimetheus vs Reina | 6–3 | 66.67% |
| IEphimetheus vs Law | 4–4 | 50.00% |
| IEphimetheus vs Hwoarang | 6–2 | 75.00% |
| IEphimetheus vs Jack-8 | 8–0 | 100.00% |
| IEphimetheus vs Xiaoyu | 5–2 | 71.43% |
| IEphimetheus vs Jin | 5–2 | 71.43% |
| IEphimetheus vs Victor | 6–1 | 85.71% |
| IEphimetheus vs Paul | 3–3 | 50.00% |
| IEphimetheus vs Yoshimitsu | 4–2 | 66.67% |
| IEphimetheus vs Eddy | 3–3 | 50.00% |
| IEphimetheus vs Devil Jin | 3–2 | 60.00% |
| IEphimetheus vs Leo | 4–1 | 80.00% |
| IEphimetheus vs Asuka | 3–2 | 60.00% |
| IEphimetheus vs Lars | 3–2 | 60.00% |
| IEphimetheus vs Jun | 4–0 | 100.00% |
| IEphimetheus vs Dragunov | 3–0 | 100.00% |
| IEphimetheus vs Azucena | 3–0 | 100.00% |
| IEphimetheus vs Lee | 2–0 | 100.00% |
| IEphimetheus vs Panda | 2–0 | 100.00% |
| IEphimetheus vs Raven | 2–0 | 100.00% |
| IEphimetheus vs Feng | 1–1 | 50.00% |
| IEphimetheus vs Alisa | 2–0 | 100.00% |
| IEphimetheus vs Kuma | 1–1 | 50.00% |
| IEphimetheus vs Heihachi | 0–2 | 0.00% |
| IEphimetheus vs Nina | 1–0 | 100.00% |
| IEphimetheus vs Zafina | 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.