| JohnBoy vs Jin | 69–52 | 57.02% |
| JohnBoy vs Kazuya | 64–48 | 57.14% |
| JohnBoy vs Bryan | 50–33 | 60.24% |
| JohnBoy vs Heihachi | 47–33 | 58.75% |
| JohnBoy vs King | 41–32 | 56.16% |
| JohnBoy vs Hwoarang | 41–27 | 60.29% |
| JohnBoy vs Steve | 35–30 | 53.85% |
| JohnBoy vs Law | 33–24 | 57.89% |
| JohnBoy vs Armor King | 25–26 | 49.02% |
| JohnBoy vs Eddy | 34–13 | 72.34% |
| JohnBoy vs Jun | 26–18 | 59.09% |
| JohnBoy vs Asuka | 28–14 | 66.67% |
| JohnBoy vs Lili | 26–15 | 63.41% |
| JohnBoy vs Reina | 21–17 | 55.26% |
| JohnBoy vs Yoshimitsu | 16–21 | 43.24% |
| JohnBoy vs Paul | 15–20 | 42.86% |
| JohnBoy vs Lidia | 19–14 | 57.58% |
| JohnBoy vs Dragunov | 18–12 | 60.00% |
| JohnBoy vs Devil Jin | 12–16 | 42.86% |
| JohnBoy vs Nina | 18–10 | 64.29% |
| JohnBoy vs Lee | 17–11 | 60.71% |
| JohnBoy vs Victor | 18–10 | 64.29% |
| JohnBoy vs Azucena | 13–13 | 50.00% |
| JohnBoy vs Lars | 13–11 | 54.17% |
| JohnBoy vs Miary Zo | 11–13 | 45.83% |
| JohnBoy vs Feng | 13–10 | 56.52% |
| JohnBoy vs Fahkumram | 14–9 | 60.87% |
| JohnBoy vs Claudio | 11–11 | 50.00% |
| JohnBoy vs Xiaoyu | 11–10 | 52.38% |
| JohnBoy vs Leroy | 14–7 | 66.67% |
| JohnBoy vs Anna | 13–8 | 61.90% |
| JohnBoy vs Jack-8 | 8–10 | 44.44% |
| JohnBoy vs Leo | 4–13 | 23.53% |
| JohnBoy vs Alisa | 10–7 | 58.82% |
| JohnBoy vs Raven | 5–11 | 31.25% |
| JohnBoy vs Clive | 5–8 | 38.46% |
| JohnBoy vs Kuma | 7–0 | 100.00% |
| JohnBoy vs Zafina | 2–2 | 50.00% |
| JohnBoy vs Shaheen | 2–0 | 100.00% |
| JohnBoy vs Panda | 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.