| Joe Koba vs Jin | 71–8 | 89.87% |
| Joe Koba vs Kazuya | 37–18 | 67.27% |
| Joe Koba vs Heihachi | 44–10 | 81.48% |
| Joe Koba vs King | 40–13 | 75.47% |
| Joe Koba vs Law | 39–12 | 76.47% |
| Joe Koba vs Reina | 32–13 | 71.11% |
| Joe Koba vs Lili | 31–12 | 72.09% |
| Joe Koba vs Dragunov | 32–10 | 76.19% |
| Joe Koba vs Bryan | 30–11 | 73.17% |
| Joe Koba vs Steve | 27–11 | 71.05% |
| Joe Koba vs Hwoarang | 22–12 | 64.71% |
| Joe Koba vs Nina | 25–7 | 78.12% |
| Joe Koba vs Asuka | 21–10 | 67.74% |
| Joe Koba vs Jun | 29–1 | 96.67% |
| Joe Koba vs Leroy | 21–8 | 72.41% |
| Joe Koba vs Paul | 17–8 | 68.00% |
| Joe Koba vs Azucena | 22–2 | 91.67% |
| Joe Koba vs Lee | 12–10 | 54.55% |
| Joe Koba vs Anna | 18–4 | 81.82% |
| Joe Koba vs Clive | 19–2 | 90.48% |
| Joe Koba vs Devil Jin | 12–7 | 63.16% |
| Joe Koba vs Armor King | 7–12 | 36.84% |
| Joe Koba vs Lars | 12–6 | 66.67% |
| Joe Koba vs Yoshimitsu | 15–2 | 88.24% |
| Joe Koba vs Xiaoyu | 10–7 | 58.82% |
| Joe Koba vs Jack-8 | 13–4 | 76.47% |
| Joe Koba vs Victor | 12–5 | 70.59% |
| Joe Koba vs Alisa | 11–5 | 68.75% |
| Joe Koba vs Lidia | 16–0 | 100.00% |
| Joe Koba vs Claudio | 9–5 | 64.29% |
| Joe Koba vs Raven | 9–4 | 69.23% |
| Joe Koba vs Fahkumram | 7–4 | 63.64% |
| Joe Koba vs Feng | 7–3 | 70.00% |
| Joe Koba vs Kuma | 9–1 | 90.00% |
| Joe Koba vs Eddy | 6–3 | 66.67% |
| Joe Koba vs Zafina | 2–4 | 33.33% |
| Joe Koba vs Miary Zo | 5–1 | 83.33% |
| Joe Koba vs Leo | 2–2 | 50.00% |
| Joe Koba vs Panda | 3–0 | 100.00% |
| Joe Koba vs Shaheen | 1–0 | 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.