| ECCO2k vs King | 6–1 | 85.71% |
| ECCO2k vs Steve | 5–1 | 83.33% |
| ECCO2k vs Dragunov | 4–2 | 66.67% |
| ECCO2k vs Hwoarang | 2–3 | 40.00% |
| ECCO2k vs Jun | 2–3 | 40.00% |
| ECCO2k vs Reina | 2–3 | 40.00% |
| ECCO2k vs Nina | 2–1 | 66.67% |
| ECCO2k vs Paul | 0–2 | 0.00% |
| ECCO2k vs Law | 1–1 | 50.00% |
| ECCO2k vs Yoshimitsu | 2–0 | 100.00% |
| ECCO2k vs Jin | 0–2 | 0.00% |
| ECCO2k vs Bryan | 0–2 | 0.00% |
| ECCO2k vs Asuka | 2–0 | 100.00% |
| ECCO2k vs Feng | 0–2 | 0.00% |
| ECCO2k vs Eddy | 2–0 | 100.00% |
| ECCO2k vs Victor | 1–0 | 100.00% |
| ECCO2k vs Raven | 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.