| Fjölnir vs Law | 15–6 | 71.43% |
| Fjölnir vs Reina | 13–6 | 68.42% |
| Fjölnir vs Lili | 8–6 | 57.14% |
| Fjölnir vs King | 4–8 | 33.33% |
| Fjölnir vs Hwoarang | 4–8 | 33.33% |
| Fjölnir vs Jin | 5–7 | 41.67% |
| Fjölnir vs Bryan | 4–4 | 50.00% |
| Fjölnir vs Steve | 5–3 | 62.50% |
| Fjölnir vs Eddy | 3–5 | 37.50% |
| Fjölnir vs Lars | 4–3 | 57.14% |
| Fjölnir vs Asuka | 4–2 | 66.67% |
| Fjölnir vs Jun | 3–3 | 50.00% |
| Fjölnir vs Dragunov | 3–2 | 60.00% |
| Fjölnir vs Kuma | 1–4 | 20.00% |
| Fjölnir vs Paul | 2–2 | 50.00% |
| Fjölnir vs Yoshimitsu | 3–1 | 75.00% |
| Fjölnir vs Kazuya | 1–3 | 25.00% |
| Fjölnir vs Jack-8 | 3–1 | 75.00% |
| Fjölnir vs Lidia | 4–0 | 100.00% |
| Fjölnir vs Feng | 2–1 | 66.67% |
| Fjölnir vs Claudio | 1–2 | 33.33% |
| Fjölnir vs Zafina | 2–1 | 66.67% |
| Fjölnir vs Fahkumram | 3–0 | 100.00% |
| Fjölnir vs Armor King | 2–1 | 66.67% |
| Fjölnir vs Alisa | 1–1 | 50.00% |
| Fjölnir vs Shaheen | 2–0 | 100.00% |
| Fjölnir vs Leroy | 0–2 | 0.00% |
| Fjölnir vs Azucena | 0–2 | 0.00% |
| Fjölnir vs Clive | 0–2 | 0.00% |
| Fjölnir vs Xiaoyu | 0–1 | 0.00% |
| Fjölnir vs Leo | 1–0 | 100.00% |
| Fjölnir vs Victor | 0–1 | 0.00% |
| Fjölnir vs Miary Zo | 1–0 | 100.00% |
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.