| JRock Joestar vs Jin | 130–143 | 47.62% |
| JRock Joestar vs Hwoarang | 124–116 | 51.67% |
| JRock Joestar vs Kazuya | 128–93 | 57.92% |
| JRock Joestar vs King | 96–109 | 46.83% |
| JRock Joestar vs Steve | 89–98 | 47.59% |
| JRock Joestar vs Bryan | 100–86 | 53.76% |
| JRock Joestar vs Reina | 94–82 | 53.41% |
| JRock Joestar vs Law | 96–78 | 55.17% |
| JRock Joestar vs Devil Jin | 76–77 | 49.67% |
| JRock Joestar vs Heihachi | 80–70 | 53.33% |
| JRock Joestar vs Lars | 82–65 | 55.78% |
| JRock Joestar vs Lili | 68–76 | 47.22% |
| JRock Joestar vs Paul | 69–68 | 50.36% |
| JRock Joestar vs Yoshimitsu | 59–68 | 46.46% |
| JRock Joestar vs Lee | 65–60 | 52.00% |
| JRock Joestar vs Raven | 66–52 | 55.93% |
| JRock Joestar vs Victor | 61–54 | 53.04% |
| JRock Joestar vs Dragunov | 56–54 | 50.91% |
| JRock Joestar vs Lidia | 50–58 | 46.30% |
| JRock Joestar vs Eddy | 56–49 | 53.33% |
| JRock Joestar vs Azucena | 60–42 | 58.82% |
| JRock Joestar vs Nina | 39–55 | 41.49% |
| JRock Joestar vs Asuka | 44–49 | 47.31% |
| JRock Joestar vs Xiaoyu | 37–53 | 41.11% |
| JRock Joestar vs Jun | 35–48 | 42.17% |
| JRock Joestar vs Feng | 32–43 | 42.67% |
| JRock Joestar vs Zafina | 39–35 | 52.70% |
| JRock Joestar vs Leo | 44–28 | 61.11% |
| JRock Joestar vs Leroy | 33–36 | 47.83% |
| JRock Joestar vs Claudio | 29–35 | 45.31% |
| JRock Joestar vs Jack-8 | 38–22 | 63.33% |
| JRock Joestar vs Clive | 27–29 | 48.21% |
| JRock Joestar vs Alisa | 25–25 | 50.00% |
| JRock Joestar vs Kuma | 16–26 | 38.10% |
| JRock Joestar vs Shaheen | 16–15 | 51.61% |
| JRock Joestar vs Fahkumram | 16–14 | 53.33% |
| JRock Joestar vs Armor King | 13–15 | 46.43% |
| JRock Joestar vs Panda | 5–9 | 35.71% |
| JRock Joestar vs Anna | 7–6 | 53.85% |
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.