| Costanza vs Steve | 13–4 | 76.47% |
| Costanza vs Heihachi | 13–4 | 76.47% |
| Costanza vs Kazuya | 9–5 | 64.29% |
| Costanza vs Lili | 10–3 | 76.92% |
| Costanza vs Paul | 9–2 | 81.82% |
| Costanza vs Law | 6–5 | 54.55% |
| Costanza vs Jin | 10–1 | 90.91% |
| Costanza vs Jun | 7–4 | 63.64% |
| Costanza vs Hwoarang | 8–2 | 80.00% |
| Costanza vs Reina | 8–2 | 80.00% |
| Costanza vs King | 5–3 | 62.50% |
| Costanza vs Asuka | 7–1 | 87.50% |
| Costanza vs Azucena | 5–2 | 71.43% |
| Costanza vs Xiaoyu | 3–3 | 50.00% |
| Costanza vs Bryan | 4–2 | 66.67% |
| Costanza vs Victor | 5–1 | 83.33% |
| Costanza vs Yoshimitsu | 3–2 | 60.00% |
| Costanza vs Leo | 2–3 | 40.00% |
| Costanza vs Alisa | 3–2 | 60.00% |
| Costanza vs Lee | 3–2 | 60.00% |
| Costanza vs Armor King | 3–2 | 60.00% |
| Costanza vs Jack-8 | 1–3 | 25.00% |
| Costanza vs Feng | 1–3 | 25.00% |
| Costanza vs Leroy | 2–2 | 50.00% |
| Costanza vs Raven | 4–0 | 100.00% |
| Costanza vs Devil Jin | 2–1 | 66.67% |
| Costanza vs Nina | 3–0 | 100.00% |
| Costanza vs Panda | 1–2 | 33.33% |
| Costanza vs Eddy | 3–0 | 100.00% |
| Costanza vs Lidia | 2–1 | 66.67% |
| Costanza vs Lars | 2–0 | 100.00% |
| Costanza vs Zafina | 2–0 | 100.00% |
| Costanza vs Shaheen | 1–0 | 100.00% |
| Costanza vs Clive | 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.