| M_IB66 vs Kazuya | 18–6 | 75.00% |
| M_IB66 vs Law | 9–4 | 69.23% |
| M_IB66 vs King | 10–3 | 76.92% |
| M_IB66 vs Jin | 7–3 | 70.00% |
| M_IB66 vs Yoshimitsu | 8–1 | 88.89% |
| M_IB66 vs Reina | 3–6 | 33.33% |
| M_IB66 vs Steve | 5–2 | 71.43% |
| M_IB66 vs Claudio | 5–2 | 71.43% |
| M_IB66 vs Paul | 1–5 | 16.67% |
| M_IB66 vs Victor | 6–0 | 100.00% |
| M_IB66 vs Hwoarang | 2–0 | 100.00% |
| M_IB66 vs Asuka | 0–2 | 0.00% |
| M_IB66 vs Lili | 0–2 | 0.00% |
| M_IB66 vs Lars | 1–1 | 50.00% |
| M_IB66 vs Heihachi | 1–1 | 50.00% |
| M_IB66 vs Fahkumram | 2–0 | 100.00% |
| M_IB66 vs Leo | 1–0 | 100.00% |
| M_IB66 vs Alisa | 1–0 | 100.00% |
| M_IB66 vs Nina | 0–1 | 0.00% |
| M_IB66 vs Lee | 1–0 | 100.00% |
| M_IB66 vs Jun | 1–0 | 100.00% |
| M_IB66 vs Eddy | 0–1 | 0.00% |
| M_IB66 vs Armor King | 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.