| G Costanza vs Kazuya | 18–15 | 54.55% |
| G Costanza vs Jin | 14–18 | 43.75% |
| G Costanza vs Law | 13–18 | 41.94% |
| G Costanza vs King | 15–13 | 53.57% |
| G Costanza vs Bryan | 8–19 | 29.63% |
| G Costanza vs Steve | 10–17 | 37.04% |
| G Costanza vs Reina | 16–9 | 64.00% |
| G Costanza vs Paul | 14–10 | 58.33% |
| G Costanza vs Hwoarang | 11–13 | 45.83% |
| G Costanza vs Eddy | 9–14 | 39.13% |
| G Costanza vs Victor | 8–11 | 42.11% |
| G Costanza vs Asuka | 8–9 | 47.06% |
| G Costanza vs Jun | 15–2 | 88.24% |
| G Costanza vs Feng | 9–6 | 60.00% |
| G Costanza vs Lili | 8–7 | 53.33% |
| G Costanza vs Heihachi | 5–10 | 33.33% |
| G Costanza vs Dragunov | 3–10 | 23.08% |
| G Costanza vs Lars | 7–6 | 53.85% |
| G Costanza vs Alisa | 9–4 | 69.23% |
| G Costanza vs Nina | 7–6 | 53.85% |
| G Costanza vs Azucena | 8–5 | 61.54% |
| G Costanza vs Xiaoyu | 9–3 | 75.00% |
| G Costanza vs Devil Jin | 7–3 | 70.00% |
| G Costanza vs Claudio | 2–8 | 20.00% |
| G Costanza vs Yoshimitsu | 2–7 | 22.22% |
| G Costanza vs Lee | 1–7 | 12.50% |
| G Costanza vs Leroy | 1–6 | 14.29% |
| G Costanza vs Jack-8 | 3–3 | 50.00% |
| G Costanza vs Lidia | 1–4 | 20.00% |
| G Costanza vs Leo | 2–2 | 50.00% |
| G Costanza vs Raven | 0–4 | 0.00% |
| G Costanza vs Kuma | 1–2 | 33.33% |
| G Costanza vs Zafina | 1–2 | 33.33% |
| G Costanza vs Clive | 0–2 | 0.00% |
| G Costanza vs Shaheen | 1–0 | 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.