| Hiero vs Jin | 17–26 | 39.53% |
| Hiero vs Steve | 10–24 | 29.41% |
| Hiero vs King | 12–17 | 41.38% |
| Hiero vs Reina | 12–12 | 50.00% |
| Hiero vs Victor | 10–12 | 45.45% |
| Hiero vs Law | 13–7 | 65.00% |
| Hiero vs Hwoarang | 5–13 | 27.78% |
| Hiero vs Lidia | 8–9 | 47.06% |
| Hiero vs Bryan | 6–10 | 37.50% |
| Hiero vs Kazuya | 4–12 | 25.00% |
| Hiero vs Asuka | 5–9 | 35.71% |
| Hiero vs Dragunov | 8–6 | 57.14% |
| Hiero vs Heihachi | 6–8 | 42.86% |
| Hiero vs Yoshimitsu | 7–4 | 63.64% |
| Hiero vs Eddy | 4–7 | 36.36% |
| Hiero vs Miary Zo | 5–6 | 45.45% |
| Hiero vs Paul | 5–5 | 50.00% |
| Hiero vs Jun | 6–4 | 60.00% |
| Hiero vs Fahkumram | 4–6 | 40.00% |
| Hiero vs Lars | 2–7 | 22.22% |
| Hiero vs Kuma | 6–3 | 66.67% |
| Hiero vs Claudio | 2–6 | 25.00% |
| Hiero vs Lee | 6–2 | 75.00% |
| Hiero vs Armor King | 3–5 | 37.50% |
| Hiero vs Lili | 2–4 | 33.33% |
| Hiero vs Nina | 1–5 | 16.67% |
| Hiero vs Azucena | 2–4 | 33.33% |
| Hiero vs Devil Jin | 1–4 | 20.00% |
| Hiero vs Raven | 2–3 | 40.00% |
| Hiero vs Xiaoyu | 2–2 | 50.00% |
| Hiero vs Shaheen | 1–3 | 25.00% |
| Hiero vs Clive | 3–1 | 75.00% |
| Hiero vs Leroy | 2–1 | 66.67% |
| Hiero vs Anna | 0–3 | 0.00% |
| Hiero vs Jack-8 | 2–0 | 100.00% |
| Hiero vs Alisa | 1–1 | 50.00% |
| Hiero vs Feng | 0–1 | 0.00% |
| Hiero vs Zafina | 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.