| James Marten vs Kazuya | 43–70 | 38.05% |
| James Marten vs Steve | 32–41 | 43.84% |
| James Marten vs Jin | 25–34 | 42.37% |
| James Marten vs Dragunov | 21–35 | 37.50% |
| James Marten vs Reina | 28–28 | 50.00% |
| James Marten vs Hwoarang | 19–31 | 38.00% |
| James Marten vs King | 25–24 | 51.02% |
| James Marten vs Bryan | 10–37 | 21.28% |
| James Marten vs Lidia | 17–23 | 42.50% |
| James Marten vs Yoshimitsu | 17–21 | 44.74% |
| James Marten vs Lili | 11–25 | 30.56% |
| James Marten vs Lars | 11–22 | 33.33% |
| James Marten vs Victor | 18–12 | 60.00% |
| James Marten vs Asuka | 11–14 | 44.00% |
| James Marten vs Nina | 7–17 | 29.17% |
| James Marten vs Azucena | 9–13 | 40.91% |
| James Marten vs Heihachi | 8–13 | 38.10% |
| James Marten vs Devil Jin | 10–10 | 50.00% |
| James Marten vs Kuma | 9–11 | 45.00% |
| James Marten vs Zafina | 3–17 | 15.00% |
| James Marten vs Paul | 7–12 | 36.84% |
| James Marten vs Law | 6–13 | 31.58% |
| James Marten vs Clive | 8–10 | 44.44% |
| James Marten vs Xiaoyu | 9–8 | 52.94% |
| James Marten vs Claudio | 6–10 | 37.50% |
| James Marten vs Eddy | 6–10 | 37.50% |
| James Marten vs Jack-8 | 2–13 | 13.33% |
| James Marten vs Alisa | 6–8 | 42.86% |
| James Marten vs Anna | 5–9 | 35.71% |
| James Marten vs Jun | 3–8 | 27.27% |
| James Marten vs Leroy | 2–8 | 20.00% |
| James Marten vs Leo | 4–5 | 44.44% |
| James Marten vs Lee | 2–6 | 25.00% |
| James Marten vs Raven | 3–5 | 37.50% |
| James Marten vs Feng | 2–5 | 28.57% |
| James Marten vs Shaheen | 1–6 | 14.29% |
| James Marten vs Fahkumram | 0–4 | 0.00% |
| James Marten vs Panda | 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.