| Gaku vs Reina | 12–13 | 48.00% |
| Gaku vs King | 9–12 | 42.86% |
| Gaku vs Steve | 7–11 | 38.89% |
| Gaku vs Hwoarang | 7–7 | 50.00% |
| Gaku vs Eddy | 7–7 | 50.00% |
| Gaku vs Jun | 2–11 | 15.38% |
| Gaku vs Devil Jin | 4–7 | 36.36% |
| Gaku vs Dragunov | 5–6 | 45.45% |
| Gaku vs Bryan | 2–8 | 20.00% |
| Gaku vs Lili | 3–7 | 30.00% |
| Gaku vs Victor | 4–6 | 40.00% |
| Gaku vs Law | 3–5 | 37.50% |
| Gaku vs Jin | 5–2 | 71.43% |
| Gaku vs Lars | 2–4 | 33.33% |
| Gaku vs Azucena | 4–2 | 66.67% |
| Gaku vs Leo | 1–4 | 20.00% |
| Gaku vs Asuka | 0–4 | 0.00% |
| Gaku vs Alisa | 2–2 | 50.00% |
| Gaku vs Paul | 0–3 | 0.00% |
| Gaku vs Kazuya | 1–2 | 33.33% |
| Gaku vs Shaheen | 1–2 | 33.33% |
| Gaku vs Leroy | 1–2 | 33.33% |
| Gaku vs Raven | 0–3 | 0.00% |
| Gaku vs Xiaoyu | 1–1 | 50.00% |
| Gaku vs Jack-8 | 2–0 | 100.00% |
| Gaku vs Claudio | 1–1 | 50.00% |
| Gaku vs Yoshimitsu | 1–0 | 100.00% |
| Gaku vs Nina | 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.