| Helfaerd vs Kazuya | 22–4 | 84.62% |
| Helfaerd vs Heihachi | 18–8 | 69.23% |
| Helfaerd vs King | 16–3 | 84.21% |
| Helfaerd vs Reina | 12–6 | 66.67% |
| Helfaerd vs Law | 13–4 | 76.47% |
| Helfaerd vs Jin | 12–5 | 70.59% |
| Helfaerd vs Asuka | 10–6 | 62.50% |
| Helfaerd vs Bryan | 9–3 | 75.00% |
| Helfaerd vs Nina | 11–1 | 91.67% |
| Helfaerd vs Paul | 11–0 | 100.00% |
| Helfaerd vs Yoshimitsu | 7–4 | 63.64% |
| Helfaerd vs Dragunov | 7–3 | 70.00% |
| Helfaerd vs Steve | 6–3 | 66.67% |
| Helfaerd vs Devil Jin | 6–2 | 75.00% |
| Helfaerd vs Leroy | 5–3 | 62.50% |
| Helfaerd vs Azucena | 2–6 | 25.00% |
| Helfaerd vs Eddy | 2–6 | 25.00% |
| Helfaerd vs Jack-8 | 2–5 | 28.57% |
| Helfaerd vs Feng | 6–1 | 85.71% |
| Helfaerd vs Lili | 4–3 | 57.14% |
| Helfaerd vs Lars | 1–6 | 14.29% |
| Helfaerd vs Zafina | 2–5 | 28.57% |
| Helfaerd vs Jun | 6–1 | 85.71% |
| Helfaerd vs Hwoarang | 5–1 | 83.33% |
| Helfaerd vs Claudio | 6–0 | 100.00% |
| Helfaerd vs Xiaoyu | 3–1 | 75.00% |
| Helfaerd vs Alisa | 2–2 | 50.00% |
| Helfaerd vs Victor | 1–3 | 25.00% |
| Helfaerd vs Raven | 1–3 | 25.00% |
| Helfaerd vs Leo | 2–1 | 66.67% |
| Helfaerd vs Lidia | 2–0 | 100.00% |
| Helfaerd vs Shaheen | 0–1 | 0.00% |
| Helfaerd vs Lee | 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.