| Gwenn vs Jin | 23–8 | 74.19% |
| Gwenn vs Dragunov | 21–8 | 72.41% |
| Gwenn vs Law | 16–8 | 66.67% |
| Gwenn vs Kazuya | 8–14 | 36.36% |
| Gwenn vs Bryan | 9–8 | 52.94% |
| Gwenn vs Steve | 12–5 | 70.59% |
| Gwenn vs Paul | 9–7 | 56.25% |
| Gwenn vs King | 12–4 | 75.00% |
| Gwenn vs Heihachi | 8–8 | 50.00% |
| Gwenn vs Asuka | 10–5 | 66.67% |
| Gwenn vs Armor King | 9–6 | 60.00% |
| Gwenn vs Lars | 6–7 | 46.15% |
| Gwenn vs Lili | 5–6 | 45.45% |
| Gwenn vs Fahkumram | 5–6 | 45.45% |
| Gwenn vs Reina | 8–2 | 80.00% |
| Gwenn vs Yoshimitsu | 3–6 | 33.33% |
| Gwenn vs Miary Zo | 5–4 | 55.56% |
| Gwenn vs Lee | 3–4 | 42.86% |
| Gwenn vs Kuma | 3–4 | 42.86% |
| Gwenn vs Leroy | 1–6 | 14.29% |
| Gwenn vs Lidia | 3–3 | 50.00% |
| Gwenn vs Devil Jin | 2–3 | 40.00% |
| Gwenn vs Panda | 1–2 | 33.33% |
| Gwenn vs Clive | 2–1 | 66.67% |
| Gwenn vs Jack-8 | 2–0 | 100.00% |
| Gwenn vs Leo | 1–1 | 50.00% |
| Gwenn vs Alisa | 0–2 | 0.00% |
| Gwenn vs Nina | 1–1 | 50.00% |
| Gwenn vs Raven | 2–0 | 100.00% |
| Gwenn vs Feng | 0–1 | 0.00% |
| Gwenn vs Jun | 0–1 | 0.00% |
| Gwenn vs Victor | 1–0 | 100.00% |
| Gwenn vs Eddy | 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.