| Ermac vs Kazuya | 32–39 | 45.07% |
| Ermac vs Jin | 29–38 | 43.28% |
| Ermac vs Reina | 42–20 | 67.74% |
| Ermac vs King | 20–29 | 40.82% |
| Ermac vs Bryan | 14–31 | 31.11% |
| Ermac vs Asuka | 24–18 | 57.14% |
| Ermac vs Dragunov | 15–25 | 37.50% |
| Ermac vs Paul | 8–22 | 26.67% |
| Ermac vs Steve | 21–7 | 75.00% |
| Ermac vs Feng | 10–18 | 35.71% |
| Ermac vs Hwoarang | 9–14 | 39.13% |
| Ermac vs Law | 7–15 | 31.82% |
| Ermac vs Alisa | 14–8 | 63.64% |
| Ermac vs Jun | 15–7 | 68.18% |
| Ermac vs Lidia | 9–13 | 40.91% |
| Ermac vs Yoshimitsu | 13–8 | 61.90% |
| Ermac vs Devil Jin | 6–15 | 28.57% |
| Ermac vs Lee | 8–11 | 42.11% |
| Ermac vs Lili | 8–10 | 44.44% |
| Ermac vs Azucena | 10–8 | 55.56% |
| Ermac vs Nina | 4–13 | 23.53% |
| Ermac vs Heihachi | 6–10 | 37.50% |
| Ermac vs Eddy | 3–11 | 21.43% |
| Ermac vs Xiaoyu | 3–9 | 25.00% |
| Ermac vs Lars | 5–6 | 45.45% |
| Ermac vs Claudio | 3–8 | 27.27% |
| Ermac vs Victor | 2–8 | 20.00% |
| Ermac vs Clive | 3–6 | 33.33% |
| Ermac vs Jack-8 | 2–6 | 25.00% |
| Ermac vs Kuma | 3–5 | 37.50% |
| Ermac vs Leo | 1–6 | 14.29% |
| Ermac vs Leroy | 6–1 | 85.71% |
| Ermac vs Panda | 2–4 | 33.33% |
| Ermac vs Raven | 2–4 | 33.33% |
| Ermac vs Zafina | 1–4 | 20.00% |
| Ermac vs Shaheen | 0–3 | 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.