| J2Mellow vs Reina | 26–9 | 74.29% |
| J2Mellow vs Paul | 9–12 | 42.86% |
| J2Mellow vs King | 13–8 | 61.90% |
| J2Mellow vs Hwoarang | 12–9 | 57.14% |
| J2Mellow vs Jin | 13–8 | 61.90% |
| J2Mellow vs Lili | 13–8 | 61.90% |
| J2Mellow vs Eddy | 2–15 | 11.76% |
| J2Mellow vs Dragunov | 12–4 | 75.00% |
| J2Mellow vs Kazuya | 10–5 | 66.67% |
| J2Mellow vs Asuka | 8–7 | 53.33% |
| J2Mellow vs Steve | 9–4 | 69.23% |
| J2Mellow vs Jun | 9–4 | 69.23% |
| J2Mellow vs Lee | 5–6 | 45.45% |
| J2Mellow vs Yoshimitsu | 6–4 | 60.00% |
| J2Mellow vs Feng | 4–6 | 40.00% |
| J2Mellow vs Azucena | 4–6 | 40.00% |
| J2Mellow vs Kuma | 2–6 | 25.00% |
| J2Mellow vs Devil Jin | 4–3 | 57.14% |
| J2Mellow vs Victor | 4–3 | 57.14% |
| J2Mellow vs Leo | 6–0 | 100.00% |
| J2Mellow vs Alisa | 3–3 | 50.00% |
| J2Mellow vs Lars | 1–4 | 20.00% |
| J2Mellow vs Xiaoyu | 2–2 | 50.00% |
| J2Mellow vs Jack-8 | 3–1 | 75.00% |
| J2Mellow vs Raven | 0–4 | 0.00% |
| J2Mellow vs Bryan | 1–2 | 33.33% |
| J2Mellow vs Nina | 2–1 | 66.67% |
| J2Mellow vs Law | 2–0 | 100.00% |
| J2Mellow vs Claudio | 2–0 | 100.00% |
| J2Mellow vs Shaheen | 2–0 | 100.00% |
| J2Mellow vs Zafina | 2–0 | 100.00% |
| J2Mellow vs Leroy | 2–0 | 100.00% |
| J2Mellow vs Panda | 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.