| Koopa Troopa vs King | 16–18 | 47.06% |
| Koopa Troopa vs Reina | 27–5 | 84.38% |
| Koopa Troopa vs Eddy | 15–17 | 46.88% |
| Koopa Troopa vs Steve | 14–9 | 60.87% |
| Koopa Troopa vs Dragunov | 13–5 | 72.22% |
| Koopa Troopa vs Kazuya | 11–6 | 64.71% |
| Koopa Troopa vs Hwoarang | 7–9 | 43.75% |
| Koopa Troopa vs Kuma | 6–9 | 40.00% |
| Koopa Troopa vs Law | 6–8 | 42.86% |
| Koopa Troopa vs Asuka | 9–5 | 64.29% |
| Koopa Troopa vs Yoshimitsu | 7–6 | 53.85% |
| Koopa Troopa vs Jin | 9–4 | 69.23% |
| Koopa Troopa vs Azucena | 10–3 | 76.92% |
| Koopa Troopa vs Lili | 7–5 | 58.33% |
| Koopa Troopa vs Lee | 5–7 | 41.67% |
| Koopa Troopa vs Victor | 8–3 | 72.73% |
| Koopa Troopa vs Raven | 5–6 | 45.45% |
| Koopa Troopa vs Xiaoyu | 8–2 | 80.00% |
| Koopa Troopa vs Feng | 4–5 | 44.44% |
| Koopa Troopa vs Nina | 6–3 | 66.67% |
| Koopa Troopa vs Panda | 4–5 | 44.44% |
| Koopa Troopa vs Claudio | 2–6 | 25.00% |
| Koopa Troopa vs Jack-8 | 4–3 | 57.14% |
| Koopa Troopa vs Leroy | 3–4 | 42.86% |
| Koopa Troopa vs Devil Jin | 3–2 | 60.00% |
| Koopa Troopa vs Paul | 2–2 | 50.00% |
| Koopa Troopa vs Lars | 2–2 | 50.00% |
| Koopa Troopa vs Alisa | 2–2 | 50.00% |
| Koopa Troopa vs Shaheen | 2–2 | 50.00% |
| Koopa Troopa vs Jun | 1–3 | 25.00% |
| Koopa Troopa vs Armor King | 2–2 | 50.00% |
| Koopa Troopa vs Bryan | 2–1 | 66.67% |
| Koopa Troopa vs Zafina | 1–2 | 33.33% |
| Koopa Troopa vs Lidia | 3–0 | 100.00% |
| Koopa Troopa vs Leo | 2–0 | 100.00% |
| Koopa Troopa vs Fahkumram | 0–2 | 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.