| Ermac vs King | 9–15 | 37.50% |
| Ermac vs Reina | 8–1 | 88.89% |
| Ermac vs Jin | 6–1 | 85.71% |
| Ermac vs Hwoarang | 3–3 | 50.00% |
| Ermac vs Claudio | 2–4 | 33.33% |
| Ermac vs Law | 1–4 | 20.00% |
| Ermac vs Yoshimitsu | 3–2 | 60.00% |
| Ermac vs Bryan | 1–4 | 20.00% |
| Ermac vs Nina | 5–0 | 100.00% |
| Ermac vs Asuka | 4–0 | 100.00% |
| Ermac vs Victor | 3–1 | 75.00% |
| Ermac vs Eddy | 2–2 | 50.00% |
| Ermac vs Lidia | 2–2 | 50.00% |
| Ermac vs Kazuya | 0–3 | 0.00% |
| Ermac vs Steve | 1–2 | 33.33% |
| Ermac vs Lili | 3–0 | 100.00% |
| Ermac vs Leo | 3–0 | 100.00% |
| Ermac vs Clive | 3–0 | 100.00% |
| Ermac vs Jack-8 | 0–2 | 0.00% |
| Ermac vs Dragunov | 1–1 | 50.00% |
| Ermac vs Shaheen | 1–1 | 50.00% |
| Ermac vs Lee | 2–0 | 100.00% |
| Ermac vs Devil Jin | 0–1 | 0.00% |
| Ermac vs Alisa | 0–1 | 0.00% |
| Ermac vs Leroy | 1–0 | 100.00% |
| Ermac vs Jun | 1–0 | 100.00% |
| Ermac vs Azucena | 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.