| Joka21 vs Steve | 11–20 | 35.48% |
| Joka21 vs Hwoarang | 6–12 | 33.33% |
| Joka21 vs Jin | 8–9 | 47.06% |
| Joka21 vs King | 6–10 | 37.50% |
| Joka21 vs Miary Zo | 5–10 | 33.33% |
| Joka21 vs Law | 5–9 | 35.71% |
| Joka21 vs Yoshimitsu | 7–7 | 50.00% |
| Joka21 vs Kazuya | 7–7 | 50.00% |
| Joka21 vs Nina | 7–4 | 63.64% |
| Joka21 vs Eddy | 5–4 | 55.56% |
| Joka21 vs Jack-8 | 3–5 | 37.50% |
| Joka21 vs Alisa | 5–3 | 62.50% |
| Joka21 vs Azucena | 6–2 | 75.00% |
| Joka21 vs Armor King | 1–7 | 12.50% |
| Joka21 vs Victor | 3–4 | 42.86% |
| Joka21 vs Heihachi | 1–6 | 14.29% |
| Joka21 vs Xiaoyu | 4–2 | 66.67% |
| Joka21 vs Lili | 3–3 | 50.00% |
| Joka21 vs Dragunov | 1–5 | 16.67% |
| Joka21 vs Claudio | 1–5 | 16.67% |
| Joka21 vs Paul | 3–2 | 60.00% |
| Joka21 vs Leroy | 1–4 | 20.00% |
| Joka21 vs Bryan | 2–2 | 50.00% |
| Joka21 vs Asuka | 1–3 | 25.00% |
| Joka21 vs Clive | 2–2 | 50.00% |
| Joka21 vs Lars | 0–3 | 0.00% |
| Joka21 vs Lee | 2–1 | 66.67% |
| Joka21 vs Devil Jin | 0–2 | 0.00% |
| Joka21 vs Shaheen | 2–0 | 100.00% |
| Joka21 vs Zafina | 1–1 | 50.00% |
| Joka21 vs Reina | 0–2 | 0.00% |
| Joka21 vs Raven | 0–2 | 0.00% |
| Joka21 vs Lidia | 0–2 | 0.00% |
| Joka21 vs Fahkumram | 2–0 | 100.00% |
| Joka21 vs Feng | 1–0 | 100.00% |
| Joka21 vs Jun | 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.