| Kthulu vs Law | 15–2 | 88.24% |
| Kthulu vs Reina | 9–5 | 64.29% |
| Kthulu vs Jin | 10–3 | 76.92% |
| Kthulu vs Kazuya | 10–3 | 76.92% |
| Kthulu vs King | 9–1 | 90.00% |
| Kthulu vs Zafina | 4–6 | 40.00% |
| Kthulu vs Dragunov | 6–2 | 75.00% |
| Kthulu vs Hwoarang | 5–2 | 71.43% |
| Kthulu vs Bryan | 5–2 | 71.43% |
| Kthulu vs Steve | 3–4 | 42.86% |
| Kthulu vs Kuma | 3–3 | 50.00% |
| Kthulu vs Yoshimitsu | 2–3 | 40.00% |
| Kthulu vs Asuka | 3–2 | 60.00% |
| Kthulu vs Feng | 2–2 | 50.00% |
| Kthulu vs Leroy | 3–1 | 75.00% |
| Kthulu vs Paul | 1–2 | 33.33% |
| Kthulu vs Jack-8 | 1–2 | 33.33% |
| Kthulu vs Victor | 3–0 | 100.00% |
| Kthulu vs Xiaoyu | 2–0 | 100.00% |
| Kthulu vs Devil Jin | 0–2 | 0.00% |
| Kthulu vs Leo | 2–0 | 100.00% |
| Kthulu vs Alisa | 2–0 | 100.00% |
| Kthulu vs Lee | 2–0 | 100.00% |
| Kthulu vs Jun | 2–0 | 100.00% |
| Kthulu vs Azucena | 2–0 | 100.00% |
| Kthulu vs Eddy | 1–1 | 50.00% |
| Kthulu vs Clive | 2–0 | 100.00% |
| Kthulu vs Lili | 1–0 | 100.00% |
| Kthulu vs Shaheen | 0–1 | 0.00% |
| Kthulu vs Raven | 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.