| Ropucha vs Kazuya | 37–27 | 57.81% |
| Ropucha vs Lili | 23–29 | 44.23% |
| Ropucha vs Reina | 28–24 | 53.85% |
| Ropucha vs Bryan | 31–20 | 60.78% |
| Ropucha vs King | 31–16 | 65.96% |
| Ropucha vs Hwoarang | 24–21 | 53.33% |
| Ropucha vs Armor King | 32–13 | 71.11% |
| Ropucha vs Heihachi | 22–19 | 53.66% |
| Ropucha vs Jin | 30–10 | 75.00% |
| Ropucha vs Steve | 14–25 | 35.90% |
| Ropucha vs Law | 30–6 | 83.33% |
| Ropucha vs Yoshimitsu | 18–16 | 52.94% |
| Ropucha vs Asuka | 14–13 | 51.85% |
| Ropucha vs Dragunov | 14–11 | 56.00% |
| Ropucha vs Azucena | 12–6 | 66.67% |
| Ropucha vs Lee | 10–7 | 58.82% |
| Ropucha vs Paul | 10–6 | 62.50% |
| Ropucha vs Devil Jin | 9–7 | 56.25% |
| Ropucha vs Claudio | 9–7 | 56.25% |
| Ropucha vs Feng | 12–3 | 80.00% |
| Ropucha vs Leroy | 7–8 | 46.67% |
| Ropucha vs Shaheen | 7–3 | 70.00% |
| Ropucha vs Fahkumram | 4–6 | 40.00% |
| Ropucha vs Victor | 4–5 | 44.44% |
| Ropucha vs Nina | 4–4 | 50.00% |
| Ropucha vs Kuma | 2–6 | 25.00% |
| Ropucha vs Lidia | 1–7 | 12.50% |
| Ropucha vs Clive | 4–4 | 50.00% |
| Ropucha vs Alisa | 4–3 | 57.14% |
| Ropucha vs Eddy | 3–4 | 42.86% |
| Ropucha vs Jun | 1–5 | 16.67% |
| Ropucha vs Zafina | 0–5 | 0.00% |
| Ropucha vs Leo | 0–4 | 0.00% |
| Ropucha vs Raven | 0–4 | 0.00% |
| Ropucha vs Anna | 2–2 | 50.00% |
| Ropucha vs Xiaoyu | 2–1 | 66.67% |
| Ropucha vs Miary Zo | 1–2 | 33.33% |
| Ropucha vs Lars | 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.