| Williamscel vs Kazuya | 93–59 | 61.18% |
| Williamscel vs King | 88–57 | 60.69% |
| Williamscel vs Bryan | 72–70 | 50.70% |
| Williamscel vs Jin | 71–64 | 52.59% |
| Williamscel vs Clive | 65–55 | 54.17% |
| Williamscel vs Steve | 76–39 | 66.09% |
| Williamscel vs Hwoarang | 53–55 | 49.07% |
| Williamscel vs Law | 58–49 | 54.21% |
| Williamscel vs Reina | 56–46 | 54.90% |
| Williamscel vs Eddy | 48–53 | 47.52% |
| Williamscel vs Dragunov | 49–26 | 65.33% |
| Williamscel vs Yoshimitsu | 43–31 | 58.11% |
| Williamscel vs Azucena | 35–35 | 50.00% |
| Williamscel vs Jun | 48–20 | 70.59% |
| Williamscel vs Paul | 36–29 | 55.38% |
| Williamscel vs Lili | 40–25 | 61.54% |
| Williamscel vs Lee | 34–28 | 54.84% |
| Williamscel vs Victor | 35–25 | 58.33% |
| Williamscel vs Heihachi | 32–22 | 59.26% |
| Williamscel vs Feng | 24–29 | 45.28% |
| Williamscel vs Lars | 26–22 | 54.17% |
| Williamscel vs Raven | 29–18 | 61.70% |
| Williamscel vs Nina | 24–22 | 52.17% |
| Williamscel vs Devil Jin | 20–25 | 44.44% |
| Williamscel vs Leo | 21–24 | 46.67% |
| Williamscel vs Asuka | 19–23 | 45.24% |
| Williamscel vs Lidia | 18–24 | 42.86% |
| Williamscel vs Alisa | 21–20 | 51.22% |
| Williamscel vs Armor King | 13–24 | 35.14% |
| Williamscel vs Jack-8 | 21–14 | 60.00% |
| Williamscel vs Leroy | 16–18 | 47.06% |
| Williamscel vs Xiaoyu | 17–14 | 54.84% |
| Williamscel vs Fahkumram | 12–19 | 38.71% |
| Williamscel vs Claudio | 10–12 | 45.45% |
| Williamscel vs Zafina | 11–7 | 61.11% |
| Williamscel vs Miary Zo | 8–7 | 53.33% |
| Williamscel vs Anna | 5–8 | 38.46% |
| Williamscel vs Shaheen | 7–4 | 63.64% |
| Williamscel vs Kuma | 4–6 | 40.00% |
| Williamscel vs Panda | 4–6 | 40.00% |
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.