| Eärendil vs Reina | 23–19–1 | 54.76% |
| Eärendil vs Steve | 17–18 | 48.57% |
| Eärendil vs King | 15–16 | 48.39% |
| Eärendil vs Jin | 13–17 | 43.33% |
| Eärendil vs Law | 12–14 | 46.15% |
| Eärendil vs Devil Jin | 11–10 | 52.38% |
| Eärendil vs Dragunov | 8–12 | 40.00% |
| Eärendil vs Nina | 8–12 | 40.00% |
| Eärendil vs Lee | 12–7 | 63.16% |
| Eärendil vs Azucena | 10–9 | 52.63% |
| Eärendil vs Kazuya | 11–7 | 61.11% |
| Eärendil vs Eddy | 7–10 | 41.18% |
| Eärendil vs Yoshimitsu | 7–9 | 43.75% |
| Eärendil vs Lars | 7–9 | 43.75% |
| Eärendil vs Paul | 10–5 | 66.67% |
| Eärendil vs Bryan | 6–9 | 40.00% |
| Eärendil vs Asuka | 8–7 | 53.33% |
| Eärendil vs Lili | 10–5 | 66.67% |
| Eärendil vs Xiaoyu | 9–5 | 64.29% |
| Eärendil vs Hwoarang | 7–5 | 58.33% |
| Eärendil vs Shaheen | 5–6 | 45.45% |
| Eärendil vs Victor | 5–6 | 45.45% |
| Eärendil vs Raven | 5–3 | 62.50% |
| Eärendil vs Kuma | 4–3 | 57.14% |
| Eärendil vs Leo | 5–1 | 83.33% |
| Eärendil vs Leroy | 3–3 | 50.00% |
| Eärendil vs Jun | 4–2 | 66.67% |
| Eärendil vs Feng | 2–3 | 40.00% |
| Eärendil vs Alisa | 2–3 | 40.00% |
| Eärendil vs Jack-8 | 2–2 | 50.00% |
| Eärendil vs Claudio | 2–2 | 50.00% |
| Eärendil vs Panda | 1–2 | 33.33% |
| Eärendil vs Zafina | 0–2 | 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.