| Leon Heart vs King | 6–4 | 60.00% |
| Leon Heart vs Kazuya | 2–4 | 33.33% |
| Leon Heart vs Lee | 3–3 | 50.00% |
| Leon Heart vs Reina | 3–3 | 50.00% |
| Leon Heart vs Jin | 0–5 | 0.00% |
| Leon Heart vs Law | 2–2 | 50.00% |
| Leon Heart vs Hwoarang | 2–2 | 50.00% |
| Leon Heart vs Lili | 2–2 | 50.00% |
| Leon Heart vs Azucena | 2–2 | 50.00% |
| Leon Heart vs Eddy | 1–3 | 25.00% |
| Leon Heart vs Steve | 1–2 | 33.33% |
| Leon Heart vs Devil Jin | 2–1 | 66.67% |
| Leon Heart vs Raven | 1–2 | 33.33% |
| Leon Heart vs Paul | 0–2 | 0.00% |
| Leon Heart vs Yoshimitsu | 1–1 | 50.00% |
| Leon Heart vs Bryan | 0–2 | 0.00% |
| Leon Heart vs Feng | 0–2 | 0.00% |
| Leon Heart vs Xiaoyu | 0–1 | 0.00% |
| Leon Heart vs Jack-8 | 0–1 | 0.00% |
| Leon Heart vs Asuka | 1–0 | 100.00% |
| Leon Heart vs Alisa | 0–1 | 0.00% |
| Leon Heart vs Claudio | 0–1 | 0.00% |
| Leon Heart vs Zafina | 0–1 | 0.00% |
| Leon Heart vs Jun | 0–1 | 0.00% |
| Leon Heart vs Victor | 0–1 | 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.