| cthulhu vs Kazuya | 50–38 | 56.82% |
| cthulhu vs King | 50–26 | 65.79% |
| cthulhu vs Jin | 34–37 | 47.89% |
| cthulhu vs Reina | 33–30 | 52.38% |
| cthulhu vs Hwoarang | 29–28 | 50.88% |
| cthulhu vs Dragunov | 29–22 | 56.86% |
| cthulhu vs Yoshimitsu | 20–23 | 46.51% |
| cthulhu vs Steve | 24–19 | 55.81% |
| cthulhu vs Law | 26–16 | 61.90% |
| cthulhu vs Bryan | 24–17 | 58.54% |
| cthulhu vs Lili | 16–23 | 41.03% |
| cthulhu vs Azucena | 21–17 | 55.26% |
| cthulhu vs Jun | 18–19 | 48.65% |
| cthulhu vs Lars | 19–15 | 55.88% |
| cthulhu vs Paul | 15–18 | 45.45% |
| cthulhu vs Leo | 15–17 | 46.88% |
| cthulhu vs Lee | 17–15 | 53.12% |
| cthulhu vs Asuka | 16–14 | 53.33% |
| cthulhu vs Feng | 13–15 | 46.43% |
| cthulhu vs Devil Jin | 11–15 | 42.31% |
| cthulhu vs Eddy | 17–9 | 65.38% |
| cthulhu vs Nina | 16–5 | 76.19% |
| cthulhu vs Xiaoyu | 11–9 | 55.00% |
| cthulhu vs Victor | 13–6 | 68.42% |
| cthulhu vs Lidia | 7–10 | 41.18% |
| cthulhu vs Alisa | 6–9 | 40.00% |
| cthulhu vs Kuma | 4–10 | 28.57% |
| cthulhu vs Zafina | 7–4 | 63.64% |
| cthulhu vs Leroy | 3–7 | 30.00% |
| cthulhu vs Panda | 5–4 | 55.56% |
| cthulhu vs Jack-8 | 4–4 | 50.00% |
| cthulhu vs Shaheen | 4–4 | 50.00% |
| cthulhu vs Raven | 2–6 | 25.00% |
| cthulhu vs Claudio | 3–4 | 42.86% |
| cthulhu vs Heihachi | 2–4 | 33.33% |
| cthulhu vs Clive | 2–1 | 66.67% |
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.