| JoonGwan vs Kazuya | 62–43 | 59.05% |
| JoonGwan vs Jin | 52–34 | 60.47% |
| JoonGwan vs Bryan | 61–25 | 70.93% |
| JoonGwan vs Reina | 47–17 | 73.44% |
| JoonGwan vs Paul | 41–22 | 65.08% |
| JoonGwan vs Hwoarang | 29–21 | 58.00% |
| JoonGwan vs Dragunov | 29–20 | 59.18% |
| JoonGwan vs Azucena | 35–14 | 71.43% |
| JoonGwan vs Law | 24–17 | 58.54% |
| JoonGwan vs Victor | 20–21 | 48.78% |
| JoonGwan vs Asuka | 32–7 | 82.05% |
| JoonGwan vs Lili | 27–12 | 69.23% |
| JoonGwan vs Yoshimitsu | 24–13 | 64.86% |
| JoonGwan vs Jun | 25–12 | 67.57% |
| JoonGwan vs King | 25–10 | 71.43% |
| JoonGwan vs Steve | 16–13 | 55.17% |
| JoonGwan vs Kuma | 19–10 | 65.52% |
| JoonGwan vs Feng | 24–4 | 85.71% |
| JoonGwan vs Xiaoyu | 18–9 | 66.67% |
| JoonGwan vs Leroy | 15–12 | 55.56% |
| JoonGwan vs Devil Jin | 17–7 | 70.83% |
| JoonGwan vs Lars | 13–10 | 56.52% |
| JoonGwan vs Lee | 12–10 | 54.55% |
| JoonGwan vs Alisa | 11–10 | 52.38% |
| JoonGwan vs Leo | 7–13 | 35.00% |
| JoonGwan vs Clive | 10–10 | 50.00% |
| JoonGwan vs Jack-8 | 9–9 | 50.00% |
| JoonGwan vs Claudio | 13–5 | 72.22% |
| JoonGwan vs Zafina | 8–7 | 53.33% |
| JoonGwan vs Eddy | 4–10 | 28.57% |
| JoonGwan vs Shaheen | 5–8 | 38.46% |
| JoonGwan vs Panda | 5–6 | 45.45% |
| JoonGwan vs Heihachi | 6–5 | 54.55% |
| JoonGwan vs Nina | 9–1 | 90.00% |
| JoonGwan vs Raven | 4–5 | 44.44% |
| JoonGwan vs Lidia | 0–4 | 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.