| John Turtle vs Reina | 34–29 | 53.97% |
| John Turtle vs King | 14–27 | 34.15% |
| John Turtle vs Kazuya | 13–14 | 48.15% |
| John Turtle vs Jin | 9–16 | 36.00% |
| John Turtle vs Steve | 5–16 | 23.81% |
| John Turtle vs Law | 6–14 | 30.00% |
| John Turtle vs Jun | 9–11 | 45.00% |
| John Turtle vs Lili | 12–7 | 63.16% |
| John Turtle vs Azucena | 6–12 | 33.33% |
| John Turtle vs Leroy | 5–10 | 33.33% |
| John Turtle vs Dragunov | 8–6 | 57.14% |
| John Turtle vs Heihachi | 8–6 | 57.14% |
| John Turtle vs Hwoarang | 3–10 | 23.08% |
| John Turtle vs Feng | 3–10 | 23.08% |
| John Turtle vs Lars | 2–10 | 16.67% |
| John Turtle vs Alisa | 2–10 | 16.67% |
| John Turtle vs Kuma | 4–8 | 33.33% |
| John Turtle vs Yoshimitsu | 6–5 | 54.55% |
| John Turtle vs Asuka | 5–6 | 45.45% |
| John Turtle vs Jack-8 | 6–4 | 60.00% |
| John Turtle vs Victor | 2–8 | 20.00% |
| John Turtle vs Lidia | 3–7 | 30.00% |
| John Turtle vs Clive | 5–5 | 50.00% |
| John Turtle vs Xiaoyu | 3–5 | 37.50% |
| John Turtle vs Bryan | 1–5 | 16.67% |
| John Turtle vs Leo | 4–2 | 66.67% |
| John Turtle vs Lee | 5–0 | 100.00% |
| John Turtle vs Shaheen | 2–2 | 50.00% |
| John Turtle vs Paul | 2–1 | 66.67% |
| John Turtle vs Devil Jin | 2–1 | 66.67% |
| John Turtle vs Nina | 1–2 | 33.33% |
| John Turtle vs Eddy | 1–2 | 33.33% |
| John Turtle vs Zafina | 0–2 | 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.