| JohnKaii vs Reina | 22–15 | 59.46% |
| JohnKaii vs Steve | 20–7 | 74.07% |
| JohnKaii vs Hwoarang | 13–10 | 56.52% |
| JohnKaii vs Jun | 13–9 | 59.09% |
| JohnKaii vs King | 4–17 | 19.05% |
| JohnKaii vs Jin | 9–12 | 42.86% |
| JohnKaii vs Kazuya | 7–14 | 33.33% |
| JohnKaii vs Lili | 8–10 | 44.44% |
| JohnKaii vs Eddy | 9–9 | 50.00% |
| JohnKaii vs Paul | 9–7 | 56.25% |
| JohnKaii vs Law | 11–5 | 68.75% |
| JohnKaii vs Asuka | 6–9 | 40.00% |
| JohnKaii vs Dragunov | 10–5 | 66.67% |
| JohnKaii vs Bryan | 9–5 | 64.29% |
| JohnKaii vs Azucena | 6–7 | 46.15% |
| JohnKaii vs Yoshimitsu | 5–7 | 41.67% |
| JohnKaii vs Feng | 7–5 | 58.33% |
| JohnKaii vs Nina | 4–8 | 33.33% |
| JohnKaii vs Jack-8 | 7–3 | 70.00% |
| JohnKaii vs Devil Jin | 3–6 | 33.33% |
| JohnKaii vs Victor | 2–7 | 22.22% |
| JohnKaii vs Kuma | 5–2 | 71.43% |
| JohnKaii vs Lars | 2–4 | 33.33% |
| JohnKaii vs Alisa | 2–4 | 33.33% |
| JohnKaii vs Zafina | 4–2 | 66.67% |
| JohnKaii vs Leo | 1–4 | 20.00% |
| JohnKaii vs Xiaoyu | 2–2 | 50.00% |
| JohnKaii vs Shaheen | 2–2 | 50.00% |
| JohnKaii vs Lee | 1–3 | 25.00% |
| JohnKaii vs Raven | 4–0 | 100.00% |
| JohnKaii vs Leroy | 0–2 | 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.