| Gundamu21 vs Reina | 10–9 | 52.63% |
| Gundamu21 vs King | 13–5 | 72.22% |
| Gundamu21 vs Jin | 10–6 | 62.50% |
| Gundamu21 vs Jun | 11–3 | 78.57% |
| Gundamu21 vs Kazuya | 7–5 | 58.33% |
| Gundamu21 vs Azucena | 7–5 | 58.33% |
| Gundamu21 vs Bryan | 9–2 | 81.82% |
| Gundamu21 vs Heihachi | 7–4 | 63.64% |
| Gundamu21 vs Steve | 3–5 | 37.50% |
| Gundamu21 vs Paul | 3–4 | 42.86% |
| Gundamu21 vs Law | 5–2 | 71.43% |
| Gundamu21 vs Lili | 3–4 | 42.86% |
| Gundamu21 vs Eddy | 3–4 | 42.86% |
| Gundamu21 vs Yoshimitsu | 1–5 | 16.67% |
| Gundamu21 vs Xiaoyu | 6–0 | 100.00% |
| Gundamu21 vs Claudio | 4–2 | 66.67% |
| Gundamu21 vs Devil Jin | 2–3 | 40.00% |
| Gundamu21 vs Kuma | 4–1 | 80.00% |
| Gundamu21 vs Hwoarang | 3–1 | 75.00% |
| Gundamu21 vs Leo | 0–4 | 0.00% |
| Gundamu21 vs Nina | 2–2 | 50.00% |
| Gundamu21 vs Raven | 4–0 | 100.00% |
| Gundamu21 vs Dragunov | 1–2 | 33.33% |
| Gundamu21 vs Zafina | 3–0 | 100.00% |
| Gundamu21 vs Feng | 2–0 | 100.00% |
| Gundamu21 vs Alisa | 0–2 | 0.00% |
| Gundamu21 vs Lee | 2–0 | 100.00% |
| Gundamu21 vs Leroy | 0–2 | 0.00% |
| Gundamu21 vs Victor | 1–1 | 50.00% |
| Gundamu21 vs Asuka | 1–0 | 100.00% |
| Gundamu21 vs Lars | 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.