| JMasson vs King | 26–32 | 44.83% |
| JMasson vs Eddy | 19–18 | 51.35% |
| JMasson vs Kazuya | 13–19 | 40.62% |
| JMasson vs Yoshimitsu | 20–11 | 64.52% |
| JMasson vs Hwoarang | 11–20 | 35.48% |
| JMasson vs Jin | 11–19 | 36.67% |
| JMasson vs Azucena | 17–13 | 56.67% |
| JMasson vs Bryan | 14–12 | 53.85% |
| JMasson vs Lars | 13–12 | 52.00% |
| JMasson vs Jun | 14–11 | 56.00% |
| JMasson vs Law | 14–9 | 60.87% |
| JMasson vs Asuka | 8–15 | 34.78% |
| JMasson vs Lili | 9–14 | 39.13% |
| JMasson vs Paul | 13–9 | 59.09% |
| JMasson vs Dragunov | 9–10 | 47.37% |
| JMasson vs Victor | 6–10 | 37.50% |
| JMasson vs Reina | 9–6 | 60.00% |
| JMasson vs Fahkumram | 7–8 | 46.67% |
| JMasson vs Raven | 4–10 | 28.57% |
| JMasson vs Heihachi | 4–10 | 28.57% |
| JMasson vs Steve | 7–6 | 53.85% |
| JMasson vs Nina | 9–2 | 81.82% |
| JMasson vs Devil Jin | 5–5 | 50.00% |
| JMasson vs Leroy | 6–4 | 60.00% |
| JMasson vs Xiaoyu | 5–4 | 55.56% |
| JMasson vs Alisa | 3–6 | 33.33% |
| JMasson vs Lee | 1–7 | 12.50% |
| JMasson vs Jack-8 | 3–4 | 42.86% |
| JMasson vs Leo | 2–5 | 28.57% |
| JMasson vs Kuma | 3–4 | 42.86% |
| JMasson vs Shaheen | 3–3 | 50.00% |
| JMasson vs Lidia | 5–1 | 83.33% |
| JMasson vs Armor King | 4–2 | 66.67% |
| JMasson vs Feng | 3–2 | 60.00% |
| JMasson vs Zafina | 1–4 | 20.00% |
| JMasson vs Anna | 4–1 | 80.00% |
| JMasson vs Claudio | 2–2 | 50.00% |
| JMasson vs Panda | 4–0 | 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.