| Atomic Flounder vs King | 12–11 | 52.17% |
| Atomic Flounder vs Reina | 9–9 | 50.00% |
| Atomic Flounder vs Kazuya | 9–6 | 60.00% |
| Atomic Flounder vs Law | 2–11 | 15.38% |
| Atomic Flounder vs Lili | 6–6 | 50.00% |
| Atomic Flounder vs Yoshimitsu | 5–4 | 55.56% |
| Atomic Flounder vs Azucena | 4–5 | 44.44% |
| Atomic Flounder vs Eddy | 3–6 | 33.33% |
| Atomic Flounder vs Victor | 2–6 | 25.00% |
| Atomic Flounder vs Asuka | 3–4 | 42.86% |
| Atomic Flounder vs Nina | 3–4 | 42.86% |
| Atomic Flounder vs Xiaoyu | 4–2 | 66.67% |
| Atomic Flounder vs Jin | 3–3 | 50.00% |
| Atomic Flounder vs Dragunov | 1–5 | 16.67% |
| Atomic Flounder vs Alisa | 4–2 | 66.67% |
| Atomic Flounder vs Jun | 5–1 | 83.33% |
| Atomic Flounder vs Paul | 4–1 | 80.00% |
| Atomic Flounder vs Hwoarang | 2–2 | 50.00% |
| Atomic Flounder vs Bryan | 0–4 | 0.00% |
| Atomic Flounder vs Devil Jin | 2–2 | 50.00% |
| Atomic Flounder vs Lars | 2–2 | 50.00% |
| Atomic Flounder vs Kuma | 2–2 | 50.00% |
| Atomic Flounder vs Feng | 2–1 | 66.67% |
| Atomic Flounder vs Leroy | 1–2 | 33.33% |
| Atomic Flounder vs Steve | 1–1 | 50.00% |
| Atomic Flounder vs Leo | 0–2 | 0.00% |
| Atomic Flounder vs Claudio | 1–1 | 50.00% |
| Atomic Flounder vs Lee | 0–2 | 0.00% |
| Atomic Flounder vs Raven | 2–0 | 100.00% |
| Atomic Flounder vs Jack-8 | 0–1 | 0.00% |
| Atomic Flounder vs Shaheen | 1–0 | 100.00% |
| Atomic Flounder vs Heihachi | 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.