| JustJacs vs Jin | 92–94–1 | 49.46% |
| JustJacs vs Dragunov | 90–69 | 56.60% |
| JustJacs vs Kazuya | 71–72 | 49.65% |
| JustJacs vs Hwoarang | 66–64 | 50.77% |
| JustJacs vs King | 66–52 | 55.93% |
| JustJacs vs Heihachi | 49–61 | 44.55% |
| JustJacs vs Bryan | 64–39 | 62.14% |
| JustJacs vs Law | 59–41 | 59.00% |
| JustJacs vs Lili | 58–39 | 59.79% |
| JustJacs vs Reina | 46–50 | 47.92% |
| JustJacs vs Yoshimitsu | 45–41 | 52.33% |
| JustJacs vs Devil Jin | 38–43 | 46.91% |
| JustJacs vs Lidia | 40–36 | 52.63% |
| JustJacs vs Fahkumram | 35–38 | 47.95% |
| JustJacs vs Victor | 34–37 | 47.89% |
| JustJacs vs Paul | 36–34 | 51.43% |
| JustJacs vs Steve | 32–33 | 49.23% |
| JustJacs vs Lars | 25–39 | 39.06% |
| JustJacs vs Lee | 30–33 | 47.62% |
| JustJacs vs Asuka | 36–26 | 58.06% |
| JustJacs vs Jun | 33–26 | 55.93% |
| JustJacs vs Alisa | 31–26 | 54.39% |
| JustJacs vs Azucena | 23–25 | 47.92% |
| JustJacs vs Feng | 21–26 | 44.68% |
| JustJacs vs Leo | 27–18 | 60.00% |
| JustJacs vs Eddy | 23–18 | 56.10% |
| JustJacs vs Xiaoyu | 23–13 | 63.89% |
| JustJacs vs Nina | 17–19 | 47.22% |
| JustJacs vs Jack-8 | 16–17 | 48.48% |
| JustJacs vs Claudio | 9–18 | 33.33% |
| JustJacs vs Leroy | 14–10 | 58.33% |
| JustJacs vs Shaheen | 8–14 | 36.36% |
| JustJacs vs Anna | 6–16 | 27.27% |
| JustJacs vs Raven | 8–11 | 42.11% |
| JustJacs vs Kuma | 5–13 | 27.78% |
| JustJacs vs Clive | 6–12 | 33.33% |
| JustJacs vs Zafina | 8–9 | 47.06% |
| JustJacs vs Panda | 7–8 | 46.67% |
| JustJacs vs Armor King | 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.