| Gwelios vs King | 20–16 | 55.56% |
| Gwelios vs Bryan | 19–16 | 54.29% |
| Gwelios vs Law | 11–16 | 40.74% |
| Gwelios vs Jin | 14–13 | 51.85% |
| Gwelios vs Kazuya | 15–11 | 57.69% |
| Gwelios vs Steve | 12–11 | 52.17% |
| Gwelios vs Jun | 13–9 | 59.09% |
| Gwelios vs Hwoarang | 11–8 | 57.89% |
| Gwelios vs Nina | 11–7 | 61.11% |
| Gwelios vs Heihachi | 9–8 | 52.94% |
| Gwelios vs Fahkumram | 8–9 | 47.06% |
| Gwelios vs Reina | 11–4 | 73.33% |
| Gwelios vs Armor King | 6–9 | 40.00% |
| Gwelios vs Victor | 10–4 | 71.43% |
| Gwelios vs Azucena | 4–9 | 30.77% |
| Gwelios vs Clive | 3–10 | 23.08% |
| Gwelios vs Eddy | 7–5 | 58.33% |
| Gwelios vs Paul | 3–7 | 30.00% |
| Gwelios vs Xiaoyu | 5–5 | 50.00% |
| Gwelios vs Asuka | 7–3 | 70.00% |
| Gwelios vs Lili | 8–2 | 80.00% |
| Gwelios vs Dragunov | 4–6 | 40.00% |
| Gwelios vs Lars | 3–6 | 33.33% |
| Gwelios vs Leroy | 6–3 | 66.67% |
| Gwelios vs Yoshimitsu | 2–6 | 25.00% |
| Gwelios vs Devil Jin | 4–4 | 50.00% |
| Gwelios vs Anna | 5–3 | 62.50% |
| Gwelios vs Lidia | 6–1 | 85.71% |
| Gwelios vs Lee | 4–2 | 66.67% |
| Gwelios vs Alisa | 2–3 | 40.00% |
| Gwelios vs Leo | 1–3 | 25.00% |
| Gwelios vs Claudio | 2–2 | 50.00% |
| Gwelios vs Raven | 4–0 | 100.00% |
| Gwelios vs Feng | 1–2 | 33.33% |
| Gwelios vs Jack-8 | 0–2 | 0.00% |
| Gwelios vs Zafina | 0–2 | 0.00% |
| Gwelios vs Shaheen | 0–1 | 0.00% |
| Gwelios 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.