| Cardboardowl vs Eddy | 31–48 | 39.24% |
| Cardboardowl vs King | 26–31 | 45.61% |
| Cardboardowl vs Reina | 26–31 | 45.61% |
| Cardboardowl vs Jin | 27–29 | 48.21% |
| Cardboardowl vs Law | 27–16 | 62.79% |
| Cardboardowl vs Kazuya | 20–23 | 46.51% |
| Cardboardowl vs Bryan | 15–26 | 36.59% |
| Cardboardowl vs Steve | 14–27 | 34.15% |
| Cardboardowl vs Lars | 12–26 | 31.58% |
| Cardboardowl vs Victor | 13–23 | 36.11% |
| Cardboardowl vs Azucena | 17–16 | 51.52% |
| Cardboardowl vs Hwoarang | 12–20 | 37.50% |
| Cardboardowl vs Feng | 18–10 | 64.29% |
| Cardboardowl vs Devil Jin | 9–17 | 34.62% |
| Cardboardowl vs Lili | 10–15 | 40.00% |
| Cardboardowl vs Nina | 10–15 | 40.00% |
| Cardboardowl vs Xiaoyu | 15–7 | 68.18% |
| Cardboardowl vs Jun | 8–14 | 36.36% |
| Cardboardowl vs Yoshimitsu | 9–12 | 42.86% |
| Cardboardowl vs Dragunov | 12–9 | 57.14% |
| Cardboardowl vs Alisa | 9–12 | 42.86% |
| Cardboardowl vs Lidia | 15–6 | 71.43% |
| Cardboardowl vs Paul | 3–16 | 15.79% |
| Cardboardowl vs Leroy | 8–10 | 44.44% |
| Cardboardowl vs Armor King | 11–7 | 61.11% |
| Cardboardowl vs Asuka | 1–16 | 5.88% |
| Cardboardowl vs Lee | 10–7 | 58.82% |
| Cardboardowl vs Leo | 4–12 | 25.00% |
| Cardboardowl vs Miary Zo | 11–5 | 68.75% |
| Cardboardowl vs Raven | 9–6 | 60.00% |
| Cardboardowl vs Kuma | 2–8 | 20.00% |
| Cardboardowl vs Clive | 6–4 | 60.00% |
| Cardboardowl vs Claudio | 3–6 | 33.33% |
| Cardboardowl vs Fahkumram | 6–3 | 66.67% |
| Cardboardowl vs Heihachi | 4–3 | 57.14% |
| Cardboardowl vs Anna | 3–3 | 50.00% |
| Cardboardowl vs Shaheen | 3–2 | 60.00% |
| Cardboardowl vs Zafina | 3–1 | 75.00% |
| Cardboardowl vs Jack-8 | 0–3 | 0.00% |
| Cardboardowl vs Panda | 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.