| Gwyn vs Eddy | 11–11 | 50.00% |
| Gwyn vs Reina | 12–4 | 75.00% |
| Gwyn vs Steve | 9–6 | 60.00% |
| Gwyn vs Kazuya | 12–2 | 85.71% |
| Gwyn vs Leroy | 6–6 | 50.00% |
| Gwyn vs Yoshimitsu | 3–6 | 33.33% |
| Gwyn vs Hwoarang | 7–2 | 77.78% |
| Gwyn vs King | 6–2 | 75.00% |
| Gwyn vs Jin | 5–3 | 62.50% |
| Gwyn vs Asuka | 5–3 | 62.50% |
| Gwyn vs Feng | 5–3 | 62.50% |
| Gwyn vs Paul | 6–1 | 85.71% |
| Gwyn vs Bryan | 5–2 | 71.43% |
| Gwyn vs Dragunov | 4–2 | 66.67% |
| Gwyn vs Azucena | 3–1 | 75.00% |
| Gwyn vs Devil Jin | 2–1 | 66.67% |
| Gwyn vs Lili | 2–1 | 66.67% |
| Gwyn vs Leo | 3–0 | 100.00% |
| Gwyn vs Claudio | 1–2 | 33.33% |
| Gwyn vs Lee | 2–1 | 66.67% |
| Gwyn vs Law | 2–1 | 66.67% |
| Gwyn vs Lars | 2–0 | 100.00% |
| Gwyn vs Nina | 1–1 | 50.00% |
| Gwyn vs Zafina | 2–0 | 100.00% |
| Gwyn vs Jun | 1–1 | 50.00% |
| Gwyn vs Jack-8 | 1–0 | 100.00% |
| Gwyn vs Raven | 0–1 | 0.00% |
| Gwyn vs Alisa | 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.