| Seju21 vs Reina | 12–16 | 42.86% |
| Seju21 vs Devil Jin | 10–12 | 45.45% |
| Seju21 vs Heihachi | 6–8 | 42.86% |
| Seju21 vs Paul | 6–7 | 46.15% |
| Seju21 vs King | 5–7 | 41.67% |
| Seju21 vs Yoshimitsu | 4–6 | 40.00% |
| Seju21 vs Law | 4–4 | 50.00% |
| Seju21 vs Lili | 4–4 | 50.00% |
| Seju21 vs Jin | 3–4 | 42.86% |
| Seju21 vs Steve | 5–1 | 83.33% |
| Seju21 vs Dragunov | 2–4 | 33.33% |
| Seju21 vs Lars | 4–2 | 66.67% |
| Seju21 vs Bryan | 2–3 | 40.00% |
| Seju21 vs Kazuya | 2–3 | 40.00% |
| Seju21 vs Feng | 0–5 | 0.00% |
| Seju21 vs Victor | 4–1 | 80.00% |
| Seju21 vs Eddy | 1–4 | 20.00% |
| Seju21 vs Xiaoyu | 2–2 | 50.00% |
| Seju21 vs Raven | 4–0 | 100.00% |
| Seju21 vs Lidia | 2–2 | 50.00% |
| Seju21 vs Leo | 2–1 | 66.67% |
| Seju21 vs Alisa | 2–1 | 66.67% |
| Seju21 vs Leroy | 1–2 | 33.33% |
| Seju21 vs Jun | 2–1 | 66.67% |
| Seju21 vs Hwoarang | 0–2 | 0.00% |
| Seju21 vs Asuka | 1–1 | 50.00% |
| Seju21 vs Shaheen | 0–2 | 0.00% |
| Seju21 vs Lee | 0–2 | 0.00% |
| Seju21 vs Kuma | 2–0 | 100.00% |
| Seju21 vs Claudio | 1–0 | 100.00% |
| Seju21 vs Nina | 1–0 | 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.