| Firefly vs Hwoarang | 26–23 | 53.06% |
| Firefly vs King | 23–15 | 60.53% |
| Firefly vs Steve | 23–11 | 67.65% |
| Firefly vs Reina | 20–12 | 62.50% |
| Firefly vs Law | 22–9 | 70.97% |
| Firefly vs Jin | 21–10 | 67.74% |
| Firefly vs Kazuya | 19–12 | 61.29% |
| Firefly vs Lili | 16–14 | 53.33% |
| Firefly vs Jun | 17–10 | 62.96% |
| Firefly vs Eddy | 19–7 | 73.08% |
| Firefly vs Heihachi | 15–11 | 57.69% |
| Firefly vs Bryan | 13–11 | 54.17% |
| Firefly vs Paul | 10–12 | 45.45% |
| Firefly vs Nina | 11–11 | 50.00% |
| Firefly vs Yoshimitsu | 7–12 | 36.84% |
| Firefly vs Asuka | 6–13 | 31.58% |
| Firefly vs Dragunov | 7–12 | 36.84% |
| Firefly vs Xiaoyu | 10–5 | 66.67% |
| Firefly vs Lars | 7–7 | 50.00% |
| Firefly vs Lee | 4–8 | 33.33% |
| Firefly vs Jack-8 | 5–4 | 55.56% |
| Firefly vs Leroy | 4–4 | 50.00% |
| Firefly vs Azucena | 6–2 | 75.00% |
| Firefly vs Victor | 4–4 | 50.00% |
| Firefly vs Feng | 2–4 | 33.33% |
| Firefly vs Kuma | 6–0 | 100.00% |
| Firefly vs Raven | 1–5 | 16.67% |
| Firefly vs Shaheen | 1–4 | 20.00% |
| Firefly vs Zafina | 0–5 | 0.00% |
| Firefly vs Lidia | 2–1 | 66.67% |
| Firefly vs Leo | 2–0 | 100.00% |
| Firefly vs Claudio | 2–0 | 100.00% |
| Firefly vs Panda | 2–0 | 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.