| JakJak vs Steve | 8–10 | 44.44% |
| JakJak vs King | 12–5 | 70.59% |
| JakJak vs Kazuya | 10–7 | 58.82% |
| JakJak vs Lili | 12–4 | 75.00% |
| JakJak vs Jun | 9–7 | 56.25% |
| JakJak vs Hwoarang | 9–4 | 69.23% |
| JakJak vs Alisa | 9–2 | 81.82% |
| JakJak vs Reina | 9–2 | 81.82% |
| JakJak vs Azucena | 7–3 | 70.00% |
| JakJak vs Jin | 9–0 | 100.00% |
| JakJak vs Lee | 3–3–1 | 50.00% |
| JakJak vs Yoshimitsu | 3–3 | 50.00% |
| JakJak vs Devil Jin | 2–4 | 33.33% |
| JakJak vs Law | 2–3 | 40.00% |
| JakJak vs Lars | 3–2 | 60.00% |
| JakJak vs Claudio | 4–0 | 100.00% |
| JakJak vs Leroy | 2–2 | 50.00% |
| JakJak vs Xiaoyu | 2–1 | 66.67% |
| JakJak vs Bryan | 2–1 | 66.67% |
| JakJak vs Jack-8 | 1–2 | 33.33% |
| JakJak vs Asuka | 2–1 | 66.67% |
| JakJak vs Victor | 2–1 | 66.67% |
| JakJak vs Paul | 2–0 | 100.00% |
| JakJak vs Feng | 2–0 | 100.00% |
| JakJak vs Leo | 2–0 | 100.00% |
| JakJak vs Nina | 1–1 | 50.00% |
| JakJak vs Heihachi | 0–2 | 0.00% |
| JakJak vs Clive | 2–0 | 100.00% |
| JakJak vs Anna | 2–0 | 100.00% |
| JakJak vs Dragunov | 1–0 | 100.00% |
| JakJak vs Zafina | 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.