| HappyJason vs King | 15–2 | 88.24% |
| HappyJason vs Kazuya | 8–5 | 61.54% |
| HappyJason vs Bryan | 8–3 | 72.73% |
| HappyJason vs Lars | 6–5 | 54.55% |
| HappyJason vs Paul | 5–4 | 55.56% |
| HappyJason vs Dragunov | 7–2 | 77.78% |
| HappyJason vs Asuka | 7–1 | 87.50% |
| HappyJason vs Eddy | 6–2 | 75.00% |
| HappyJason vs Alisa | 5–2 | 71.43% |
| HappyJason vs Law | 6–0 | 100.00% |
| HappyJason vs Jin | 5–1 | 83.33% |
| HappyJason vs Leo | 4–2 | 66.67% |
| HappyJason vs Lee | 5–1 | 83.33% |
| HappyJason vs Azucena | 6–0 | 100.00% |
| HappyJason vs Steve | 5–0 | 100.00% |
| HappyJason vs Shaheen | 4–1 | 80.00% |
| HappyJason vs Jun | 5–0 | 100.00% |
| HappyJason vs Yoshimitsu | 4–0 | 100.00% |
| HappyJason vs Xiaoyu | 1–3 | 25.00% |
| HappyJason vs Lili | 4–0 | 100.00% |
| HappyJason vs Reina | 3–1 | 75.00% |
| HappyJason vs Devil Jin | 3–0 | 100.00% |
| HappyJason vs Claudio | 3–0 | 100.00% |
| HappyJason vs Nina | 1–2 | 33.33% |
| HappyJason vs Panda | 2–1 | 66.67% |
| HappyJason vs Zafina | 3–0 | 100.00% |
| HappyJason vs Hwoarang | 0–2 | 0.00% |
| HappyJason vs Jack-8 | 2–0 | 100.00% |
| HappyJason vs Raven | 2–0 | 100.00% |
| HappyJason vs Heihachi | 2–0 | 100.00% |
| HappyJason vs Kuma | 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.