| Costcos vs Bryan | 118–83 | 58.71% |
| Costcos vs Kazuya | 109–73 | 59.89% |
| Costcos vs Dragunov | 100–66 | 60.24% |
| Costcos vs Fahkumram | 91–72 | 55.83% |
| Costcos vs Hwoarang | 81–81 | 50.00% |
| Costcos vs Paul | 92–68 | 57.50% |
| Costcos vs Jin | 84–72 | 53.85% |
| Costcos vs King | 61–67 | 47.66% |
| Costcos vs Steve | 57–52 | 52.29% |
| Costcos vs Reina | 47–57 | 45.19% |
| Costcos vs Asuka | 48–54 | 47.06% |
| Costcos vs Heihachi | 44–57 | 43.56% |
| Costcos vs Victor | 43–52 | 45.26% |
| Costcos vs Lili | 52–34 | 60.47% |
| Costcos vs Lars | 37–48 | 43.53% |
| Costcos vs Claudio | 52–33 | 61.18% |
| Costcos vs Lee | 49–29 | 62.82% |
| Costcos vs Jun | 45–29 | 60.81% |
| Costcos vs Law | 37–35 | 51.39% |
| Costcos vs Azucena | 39–31 | 55.71% |
| Costcos vs Jack-8 | 32–34 | 48.48% |
| Costcos vs Devil Jin | 33–32 | 50.77% |
| Costcos vs Leo | 38–27 | 58.46% |
| Costcos vs Armor King | 35–30 | 53.85% |
| Costcos vs Clive | 44–18 | 70.97% |
| Costcos vs Nina | 26–34 | 43.33% |
| Costcos vs Anna | 24–34 | 41.38% |
| Costcos vs Alisa | 24–27 | 47.06% |
| Costcos vs Yoshimitsu | 21–28 | 42.86% |
| Costcos vs Feng | 34–14 | 70.83% |
| Costcos vs Shaheen | 31–17 | 64.58% |
| Costcos vs Lidia | 20–25 | 44.44% |
| Costcos vs Leroy | 27–17 | 61.36% |
| Costcos vs Xiaoyu | 20–18 | 52.63% |
| Costcos vs Eddy | 12–18 | 40.00% |
| Costcos vs Raven | 12–15 | 44.44% |
| Costcos vs Zafina | 14–9 | 60.87% |
| Costcos vs Kuma | 4–17 | 19.05% |
| Costcos vs Panda | 8–12 | 40.00% |
| Costcos vs Miary Zo | 6–5 | 54.55% |
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.