| Cosmo vs Clive | 6–13 | 31.58% |
| Cosmo vs Reina | 3–7 | 30.00% |
| Cosmo vs Dragunov | 2–6 | 25.00% |
| Cosmo vs Kazuya | 2–6 | 25.00% |
| Cosmo vs Devil Jin | 1–5 | 16.67% |
| Cosmo vs Lars | 4–2 | 66.67% |
| Cosmo vs Heihachi | 2–4 | 33.33% |
| Cosmo vs Law | 2–3 | 40.00% |
| Cosmo vs Jin | 3–2 | 60.00% |
| Cosmo vs Victor | 3–2 | 60.00% |
| Cosmo vs Yoshimitsu | 2–2 | 50.00% |
| Cosmo vs Xiaoyu | 3–1 | 75.00% |
| Cosmo vs Bryan | 4–0 | 100.00% |
| Cosmo vs Leo | 1–3 | 25.00% |
| Cosmo vs Jun | 4–0 | 100.00% |
| Cosmo vs Azucena | 3–1 | 75.00% |
| Cosmo vs Eddy | 1–3 | 25.00% |
| Cosmo vs Paul | 0–3 | 0.00% |
| Cosmo vs Lili | 3–0 | 100.00% |
| Cosmo vs Nina | 0–3 | 0.00% |
| Cosmo vs Jack-8 | 0–2 | 0.00% |
| Cosmo vs Claudio | 2–0 | 100.00% |
| Cosmo vs Panda | 2–0 | 100.00% |
| Cosmo vs Zafina | 0–2 | 0.00% |
| Cosmo vs Leroy | 0–2 | 0.00% |
| Cosmo vs King | 0–1 | 0.00% |
| Cosmo vs Asuka | 1–0 | 100.00% |
| Cosmo vs Lee | 1–0 | 100.00% |
| Cosmo vs Lidia | 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.