| Codex vs Armor King | 49–60 | 44.95% |
| Codex vs King | 24–29 | 45.28% |
| Codex vs Kazuya | 21–28 | 42.86% |
| Codex vs Steve | 28–21 | 57.14% |
| Codex vs Hwoarang | 17–25 | 40.48% |
| Codex vs Jin | 18–24 | 42.86% |
| Codex vs Reina | 18–22 | 45.00% |
| Codex vs Dragunov | 19–20 | 48.72% |
| Codex vs Xiaoyu | 14–18 | 43.75% |
| Codex vs Bryan | 10–20 | 33.33% |
| Codex vs Clive | 12–18 | 40.00% |
| Codex vs Law | 10–14 | 41.67% |
| Codex vs Lili | 10–12 | 45.45% |
| Codex vs Eddy | 10–12 | 45.45% |
| Codex vs Lee | 9–12 | 42.86% |
| Codex vs Victor | 10–11 | 47.62% |
| Codex vs Jun | 8–12 | 40.00% |
| Codex vs Lidia | 9–11 | 45.00% |
| Codex vs Yoshimitsu | 10–9 | 52.63% |
| Codex vs Lars | 5–12 | 29.41% |
| Codex vs Devil Jin | 5–11 | 31.25% |
| Codex vs Heihachi | 3–13 | 18.75% |
| Codex vs Leroy | 6–9 | 40.00% |
| Codex vs Fahkumram | 7–8 | 46.67% |
| Codex vs Jack-8 | 4–10 | 28.57% |
| Codex vs Nina | 9–4 | 69.23% |
| Codex vs Anna | 3–10 | 23.08% |
| Codex vs Asuka | 1–11 | 8.33% |
| Codex vs Feng | 5–7 | 41.67% |
| Codex vs Azucena | 2–9 | 18.18% |
| Codex vs Claudio | 8–2 | 80.00% |
| Codex vs Leo | 4–5 | 44.44% |
| Codex vs Shaheen | 1–7 | 12.50% |
| Codex vs Paul | 2–5 | 28.57% |
| Codex vs Alisa | 2–5 | 28.57% |
| Codex vs Zafina | 1–4 | 20.00% |
| Codex vs Kuma | 0–4 | 0.00% |
| Codex vs Raven | 4–0 | 100.00% |
| Codex vs Panda | 1–2 | 33.33% |
| Codex vs Miary Zo | 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.