| Marl Karx vs King | 29–32 | 47.54% |
| Marl Karx vs Bryan | 22–30 | 42.31% |
| Marl Karx vs Jin | 24–27 | 47.06% |
| Marl Karx vs Kazuya | 19–29 | 39.58% |
| Marl Karx vs Heihachi | 21–21 | 50.00% |
| Marl Karx vs Steve | 14–25 | 35.90% |
| Marl Karx vs Reina | 25–12 | 67.57% |
| Marl Karx vs Law | 11–23 | 32.35% |
| Marl Karx vs Dragunov | 14–16 | 46.67% |
| Marl Karx vs Asuka | 9–19 | 32.14% |
| Marl Karx vs Hwoarang | 12–15 | 44.44% |
| Marl Karx vs Victor | 10–13 | 43.48% |
| Marl Karx vs Eddy | 9–13 | 40.91% |
| Marl Karx vs Fahkumram | 12–10 | 54.55% |
| Marl Karx vs Lili | 7–12 | 36.84% |
| Marl Karx vs Leo | 5–14 | 26.32% |
| Marl Karx vs Lars | 8–11 | 42.11% |
| Marl Karx vs Devil Jin | 7–10 | 41.18% |
| Marl Karx vs Lee | 5–12 | 29.41% |
| Marl Karx vs Lidia | 9–7 | 56.25% |
| Marl Karx vs Yoshimitsu | 6–9 | 40.00% |
| Marl Karx vs Clive | 8–6 | 57.14% |
| Marl Karx vs Paul | 4–9 | 30.77% |
| Marl Karx vs Jack-8 | 6–7 | 46.15% |
| Marl Karx vs Azucena | 6–6 | 50.00% |
| Marl Karx vs Anna | 4–8 | 33.33% |
| Marl Karx vs Alisa | 2–8 | 20.00% |
| Marl Karx vs Xiaoyu | 2–7 | 22.22% |
| Marl Karx vs Feng | 3–6 | 33.33% |
| Marl Karx vs Nina | 6–3 | 66.67% |
| Marl Karx vs Leroy | 4–4 | 50.00% |
| Marl Karx vs Shaheen | 3–4 | 42.86% |
| Marl Karx vs Jun | 2–5 | 28.57% |
| Marl Karx vs Claudio | 6–0 | 100.00% |
| Marl Karx vs Zafina | 2–4 | 33.33% |
| Marl Karx vs Armor King | 3–2 | 60.00% |
| Marl Karx vs Kuma | 0–4 | 0.00% |
| Marl Karx vs Raven | 2–2 | 50.00% |
| Marl Karx vs Panda | 0–1 | 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.