| CowEther vs Reina | 17–20 | 45.95% |
| CowEther vs Dragunov | 19–17 | 52.78% |
| CowEther vs Law | 12–16 | 42.86% |
| CowEther vs King | 12–15 | 44.44% |
| CowEther vs Steve | 11–14 | 44.00% |
| CowEther vs Victor | 11–14 | 44.00% |
| CowEther vs Armor King | 10–14 | 41.67% |
| CowEther vs Kazuya | 6–15 | 28.57% |
| CowEther vs Miary Zo | 9–12 | 42.86% |
| CowEther vs Yoshimitsu | 12–4 | 75.00% |
| CowEther vs Jin | 4–12 | 25.00% |
| CowEther vs Eddy | 4–12 | 25.00% |
| CowEther vs Bryan | 3–11 | 21.43% |
| CowEther vs Lili | 8–5 | 61.54% |
| CowEther vs Asuka | 5–6 | 45.45% |
| CowEther vs Paul | 3–6 | 33.33% |
| CowEther vs Jack-8 | 1–8 | 11.11% |
| CowEther vs Leroy | 3–6 | 33.33% |
| CowEther vs Heihachi | 1–8 | 11.11% |
| CowEther vs Feng | 6–2 | 75.00% |
| CowEther vs Lars | 2–5 | 28.57% |
| CowEther vs Nina | 2–5 | 28.57% |
| CowEther vs Azucena | 5–2 | 71.43% |
| CowEther vs Lidia | 3–3 | 50.00% |
| CowEther vs Hwoarang | 3–2 | 60.00% |
| CowEther vs Leo | 2–3 | 40.00% |
| CowEther vs Lee | 1–4 | 20.00% |
| CowEther vs Fahkumram | 3–2 | 60.00% |
| CowEther vs Alisa | 2–2 | 50.00% |
| CowEther vs Jun | 1–3 | 25.00% |
| CowEther vs Anna | 2–1 | 66.67% |
| CowEther vs Xiaoyu | 0–2 | 0.00% |
| CowEther vs Claudio | 2–0 | 100.00% |
| CowEther vs Devil Jin | 0–1 | 0.00% |
| CowEther vs Zafina | 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.