| IS4AC vs King | 9–13 | 40.91% |
| IS4AC vs Law | 9–9 | 50.00% |
| IS4AC vs Yoshimitsu | 8–6 | 57.14% |
| IS4AC vs Jin | 9–4 | 69.23% |
| IS4AC vs Steve | 6–7 | 46.15% |
| IS4AC vs Lili | 7–3 | 70.00% |
| IS4AC vs Nina | 6–3 | 66.67% |
| IS4AC vs Armor King | 4–5 | 44.44% |
| IS4AC vs Hwoarang | 4–4 | 50.00% |
| IS4AC vs Asuka | 2–6 | 25.00% |
| IS4AC vs Eddy | 0–8 | 0.00% |
| IS4AC vs Fahkumram | 2–5 | 28.57% |
| IS4AC vs Paul | 4–2 | 66.67% |
| IS4AC vs Lars | 3–3 | 50.00% |
| IS4AC vs Bryan | 0–5 | 0.00% |
| IS4AC vs Kazuya | 1–4 | 20.00% |
| IS4AC vs Lee | 0–5 | 0.00% |
| IS4AC vs Reina | 4–1 | 80.00% |
| IS4AC vs Azucena | 1–4 | 20.00% |
| IS4AC vs Miary Zo | 2–3 | 40.00% |
| IS4AC vs Devil Jin | 3–1 | 75.00% |
| IS4AC vs Dragunov | 1–3 | 25.00% |
| IS4AC vs Raven | 4–0 | 100.00% |
| IS4AC vs Anna | 4–0 | 100.00% |
| IS4AC vs Clive | 2–1 | 66.67% |
| IS4AC vs Xiaoyu | 0–2 | 0.00% |
| IS4AC vs Leo | 0–2 | 0.00% |
| IS4AC vs Alisa | 0–2 | 0.00% |
| IS4AC vs Claudio | 0–2 | 0.00% |
| IS4AC vs Lidia | 0–2 | 0.00% |
| IS4AC vs Jun | 1–0 | 100.00% |
| IS4AC vs Heihachi | 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.