| Jostar vs King | 29–5 | 85.29% |
| Jostar vs Reina | 25–1 | 96.15% |
| Jostar vs Jin | 22–0 | 100.00% |
| Jostar vs Kazuya | 19–1 | 95.00% |
| Jostar vs Heihachi | 14–5 | 73.68% |
| Jostar vs Paul | 14–4 | 77.78% |
| Jostar vs Bryan | 16–2 | 88.89% |
| Jostar vs Victor | 13–5 | 72.22% |
| Jostar vs Yoshimitsu | 14–3 | 82.35% |
| Jostar vs Hwoarang | 12–3 | 80.00% |
| Jostar vs Clive | 11–4 | 73.33% |
| Jostar vs Dragunov | 11–3 | 78.57% |
| Jostar vs Lili | 12–1 | 92.31% |
| Jostar vs Steve | 8–4 | 66.67% |
| Jostar vs Law | 8–3 | 72.73% |
| Jostar vs Lee | 8–3 | 72.73% |
| Jostar vs Jun | 9–2 | 81.82% |
| Jostar vs Jack-8 | 6–4 | 60.00% |
| Jostar vs Lars | 6–3 | 66.67% |
| Jostar vs Azucena | 6–3 | 66.67% |
| Jostar vs Eddy | 7–2 | 77.78% |
| Jostar vs Lidia | 8–0 | 100.00% |
| Jostar vs Asuka | 3–2 | 60.00% |
| Jostar vs Feng | 3–2 | 60.00% |
| Jostar vs Leo | 4–0 | 100.00% |
| Jostar vs Nina | 4–0 | 100.00% |
| Jostar vs Zafina | 4–0 | 100.00% |
| Jostar vs Raven | 4–0 | 100.00% |
| Jostar vs Xiaoyu | 3–0 | 100.00% |
| Jostar vs Alisa | 3–0 | 100.00% |
| Jostar vs Devil Jin | 2–0 | 100.00% |
| Jostar vs Kuma | 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.