| WhyNot vs Jin | 11–9 | 55.00% |
| WhyNot vs Kazuya | 5–9 | 35.71% |
| WhyNot vs Yoshimitsu | 6–7 | 46.15% |
| WhyNot vs Reina | 10–2 | 83.33% |
| WhyNot vs Azucena | 6–6 | 50.00% |
| WhyNot vs Steve | 7–4 | 63.64% |
| WhyNot vs King | 6–4 | 60.00% |
| WhyNot vs Victor | 7–2 | 77.78% |
| WhyNot vs Asuka | 2–6 | 25.00% |
| WhyNot vs Paul | 4–3 | 57.14% |
| WhyNot vs Hwoarang | 3–4 | 42.86% |
| WhyNot vs Dragunov | 4–3 | 57.14% |
| WhyNot vs Claudio | 6–1 | 85.71% |
| WhyNot vs Alisa | 1–5 | 16.67% |
| WhyNot vs Heihachi | 1–5 | 16.67% |
| WhyNot vs Xiaoyu | 4–1 | 80.00% |
| WhyNot vs Raven | 4–1 | 80.00% |
| WhyNot vs Clive | 3–1 | 75.00% |
| WhyNot vs Bryan | 1–2 | 33.33% |
| WhyNot vs Lee | 1–2 | 33.33% |
| WhyNot vs Jun | 2–1 | 66.67% |
| WhyNot vs Eddy | 2–1 | 66.67% |
| WhyNot vs Lidia | 2–1 | 66.67% |
| WhyNot vs Jack-8 | 2–0 | 100.00% |
| WhyNot vs Lili | 1–1 | 50.00% |
| WhyNot vs Lars | 1–1 | 50.00% |
| WhyNot vs Shaheen | 2–0 | 100.00% |
| WhyNot vs Law | 1–0 | 100.00% |
| WhyNot vs Devil Jin | 1–0 | 100.00% |
| WhyNot vs Feng | 1–0 | 100.00% |
| WhyNot vs Panda | 1–0 | 100.00% |
| WhyNot vs Anna | 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.