| Jonald Deffery vs King | 33–15 | 68.75% |
| Jonald Deffery vs Steve | 31–13 | 70.45% |
| Jonald Deffery vs Jin | 22–21 | 51.16% |
| Jonald Deffery vs Armor King | 16–22 | 42.11% |
| Jonald Deffery vs Dragunov | 20–15 | 57.14% |
| Jonald Deffery vs Bryan | 25–6 | 80.65% |
| Jonald Deffery vs Lee | 20–9 | 68.97% |
| Jonald Deffery vs Kazuya | 22–6 | 78.57% |
| Jonald Deffery vs Devil Jin | 19–5 | 79.17% |
| Jonald Deffery vs Fahkumram | 12–9 | 57.14% |
| Jonald Deffery vs Lars | 16–4 | 80.00% |
| Jonald Deffery vs Hwoarang | 15–4 | 78.95% |
| Jonald Deffery vs Lili | 8–11 | 42.11% |
| Jonald Deffery vs Law | 13–5 | 72.22% |
| Jonald Deffery vs Feng | 15–2 | 88.24% |
| Jonald Deffery vs Kuma | 8–7 | 53.33% |
| Jonald Deffery vs Clive | 10–5 | 66.67% |
| Jonald Deffery vs Heihachi | 10–4 | 71.43% |
| Jonald Deffery vs Asuka | 7–6 | 53.85% |
| Jonald Deffery vs Jun | 8–5 | 61.54% |
| Jonald Deffery vs Victor | 8–5 | 61.54% |
| Jonald Deffery vs Yoshimitsu | 2–10 | 16.67% |
| Jonald Deffery vs Eddy | 8–3 | 72.73% |
| Jonald Deffery vs Claudio | 6–3 | 66.67% |
| Jonald Deffery vs Paul | 3–5 | 37.50% |
| Jonald Deffery vs Xiaoyu | 2–5 | 28.57% |
| Jonald Deffery vs Jack-8 | 3–4 | 42.86% |
| Jonald Deffery vs Leo | 3–4 | 42.86% |
| Jonald Deffery vs Raven | 6–1 | 85.71% |
| Jonald Deffery vs Lidia | 4–3 | 57.14% |
| Jonald Deffery vs Azucena | 4–1 | 80.00% |
| Jonald Deffery vs Shaheen | 0–4 | 0.00% |
| Jonald Deffery vs Leroy | 2–2 | 50.00% |
| Jonald Deffery vs Anna | 0–4 | 0.00% |
| Jonald Deffery vs Reina | 3–0 | 100.00% |
| Jonald Deffery vs Nina | 0–2 | 0.00% |
| Jonald Deffery vs Panda | 0–2 | 0.00% |
| Jonald Deffery vs Miary Zo | 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.