| Eira vs Kazuya | 46–44 | 51.11% |
| Eira vs Bryan | 38–33 | 53.52% |
| Eira vs Jin | 32–37 | 46.38% |
| Eira vs King | 39–29 | 57.35% |
| Eira vs Reina | 32–30 | 51.61% |
| Eira vs Dragunov | 33–26 | 55.93% |
| Eira vs Steve | 28–26 | 51.85% |
| Eira vs Heihachi | 24–22 | 52.17% |
| Eira vs Lars | 20–24 | 45.45% |
| Eira vs Paul | 18–25 | 41.86% |
| Eira vs Fahkumram | 20–23 | 46.51% |
| Eira vs Hwoarang | 13–27 | 32.50% |
| Eira vs Law | 14–25 | 35.90% |
| Eira vs Leo | 16–21 | 43.24% |
| Eira vs Victor | 20–16 | 55.56% |
| Eira vs Armor King | 16–18 | 47.06% |
| Eira vs Lili | 17–15 | 53.12% |
| Eira vs Asuka | 12–19 | 38.71% |
| Eira vs Yoshimitsu | 20–9 | 68.97% |
| Eira vs Jun | 10–19 | 34.48% |
| Eira vs Claudio | 16–9 | 64.00% |
| Eira vs Xiaoyu | 11–12 | 47.83% |
| Eira vs Lee | 9–14 | 39.13% |
| Eira vs Devil Jin | 7–14 | 33.33% |
| Eira vs Clive | 11–9 | 55.00% |
| Eira vs Alisa | 8–9 | 47.06% |
| Eira vs Anna | 4–12 | 25.00% |
| Eira vs Azucena | 9–6 | 60.00% |
| Eira vs Leroy | 4–10 | 28.57% |
| Eira vs Feng | 6–7 | 46.15% |
| Eira vs Jack-8 | 8–4 | 66.67% |
| Eira vs Nina | 8–4 | 66.67% |
| Eira vs Lidia | 6–6 | 50.00% |
| Eira vs Shaheen | 4–6 | 40.00% |
| Eira vs Eddy | 3–6 | 33.33% |
| Eira vs Kuma | 2–6 | 25.00% |
| Eira vs Zafina | 0–6 | 0.00% |
| Eira vs Raven | 2–3 | 40.00% |
| Eira vs Miary Zo | 3–0 | 100.00% |
| Eira vs Panda | 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.