| Jack Jack vs Jun | 12–5 | 70.59% |
| Jack Jack vs Reina | 9–8 | 52.94% |
| Jack Jack vs Bryan | 5–10 | 33.33% |
| Jack Jack vs Jin | 5–9 | 35.71% |
| Jack Jack vs Asuka | 6–6 | 50.00% |
| Jack Jack vs Paul | 3–7 | 30.00% |
| Jack Jack vs King | 6–4 | 60.00% |
| Jack Jack vs Kazuya | 3–7 | 30.00% |
| Jack Jack vs Lars | 5–5 | 50.00% |
| Jack Jack vs Raven | 3–7 | 30.00% |
| Jack Jack vs Steve | 2–7 | 22.22% |
| Jack Jack vs Dragunov | 7–1 | 87.50% |
| Jack Jack vs Eddy | 4–4 | 50.00% |
| Jack Jack vs Xiaoyu | 1–6 | 14.29% |
| Jack Jack vs Devil Jin | 5–2 | 71.43% |
| Jack Jack vs Zafina | 3–4 | 42.86% |
| Jack Jack vs Lee | 0–6 | 0.00% |
| Jack Jack vs Leroy | 4–2 | 66.67% |
| Jack Jack vs Azucena | 0–6 | 0.00% |
| Jack Jack vs Yoshimitsu | 3–2 | 60.00% |
| Jack Jack vs Jack-8 | 1–4 | 20.00% |
| Jack Jack vs Lili | 0–5 | 0.00% |
| Jack Jack vs Leo | 2–3 | 40.00% |
| Jack Jack vs Panda | 3–2 | 60.00% |
| Jack Jack vs Law | 2–2 | 50.00% |
| Jack Jack vs Feng | 4–0 | 100.00% |
| Jack Jack vs Alisa | 4–0 | 100.00% |
| Jack Jack vs Claudio | 1–3 | 25.00% |
| Jack Jack vs Victor | 4–0 | 100.00% |
| Jack Jack vs Hwoarang | 0–3 | 0.00% |
| Jack Jack vs Nina | 1–1 | 50.00% |
| Jack Jack vs Kuma | 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.