| Red Karma vs Kazuya | 29–30 | 49.15% |
| Red Karma vs King | 31–21 | 59.62% |
| Red Karma vs Heihachi | 31–19 | 62.00% |
| Red Karma vs Reina | 17–25 | 40.48% |
| Red Karma vs Steve | 19–22 | 46.34% |
| Red Karma vs Jin | 19–18 | 51.35% |
| Red Karma vs Bryan | 15–21 | 41.67% |
| Red Karma vs Law | 13–16 | 44.83% |
| Red Karma vs Yoshimitsu | 13–12 | 52.00% |
| Red Karma vs Paul | 11–13 | 45.83% |
| Red Karma vs Hwoarang | 12–12 | 50.00% |
| Red Karma vs Lili | 16–7 | 69.57% |
| Red Karma vs Eddy | 10–11 | 47.62% |
| Red Karma vs Dragunov | 10–9 | 52.63% |
| Red Karma vs Devil Jin | 8–10 | 44.44% |
| Red Karma vs Azucena | 8–10 | 44.44% |
| Red Karma vs Anna | 7–10 | 41.18% |
| Red Karma vs Clive | 7–8 | 46.67% |
| Red Karma vs Raven | 5–9 | 35.71% |
| Red Karma vs Feng | 9–4 | 69.23% |
| Red Karma vs Nina | 8–5 | 61.54% |
| Red Karma vs Xiaoyu | 6–5 | 54.55% |
| Red Karma vs Claudio | 7–4 | 63.64% |
| Red Karma vs Lee | 6–4 | 60.00% |
| Red Karma vs Asuka | 2–7 | 22.22% |
| Red Karma vs Lidia | 4–5 | 44.44% |
| Red Karma vs Fahkumram | 4–5 | 44.44% |
| Red Karma vs Jack-8 | 3–4 | 42.86% |
| Red Karma vs Victor | 1–6 | 14.29% |
| Red Karma vs Jun | 2–3 | 40.00% |
| Red Karma vs Alisa | 1–2 | 33.33% |
| Red Karma vs Shaheen | 1–2 | 33.33% |
| Red Karma vs Leroy | 1–2 | 33.33% |
| Red Karma vs Armor King | 1–2 | 33.33% |
| Red Karma vs Lars | 0–2 | 0.00% |
| Red Karma vs Zafina | 2–0 | 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.