| Neanderthal vs Kazuya | 20–25 | 44.44% |
| Neanderthal vs Yoshimitsu | 25–17 | 59.52% |
| Neanderthal vs King | 21–10 | 67.74% |
| Neanderthal vs Bryan | 13–17 | 43.33% |
| Neanderthal vs Lili | 19–11 | 63.33% |
| Neanderthal vs Law | 14–14 | 50.00% |
| Neanderthal vs Steve | 14–12 | 53.85% |
| Neanderthal vs Hwoarang | 14–11 | 56.00% |
| Neanderthal vs Paul | 9–12 | 42.86% |
| Neanderthal vs Reina | 9–10 | 47.37% |
| Neanderthal vs Leo | 9–9 | 50.00% |
| Neanderthal vs Jun | 9–9 | 50.00% |
| Neanderthal vs Jin | 7–10 | 41.18% |
| Neanderthal vs Lars | 10–7 | 58.82% |
| Neanderthal vs Nina | 11–6 | 64.71% |
| Neanderthal vs Lee | 7–9 | 43.75% |
| Neanderthal vs Jack-8 | 7–8 | 46.67% |
| Neanderthal vs Asuka | 8–7 | 53.33% |
| Neanderthal vs Devil Jin | 7–8 | 46.67% |
| Neanderthal vs Claudio | 10–5 | 66.67% |
| Neanderthal vs Heihachi | 8–7 | 53.33% |
| Neanderthal vs Xiaoyu | 9–4 | 69.23% |
| Neanderthal vs Alisa | 6–6 | 50.00% |
| Neanderthal vs Kuma | 6–6 | 50.00% |
| Neanderthal vs Zafina | 4–8 | 33.33% |
| Neanderthal vs Shaheen | 4–6 | 40.00% |
| Neanderthal vs Panda | 5–4 | 55.56% |
| Neanderthal vs Leroy | 2–6 | 25.00% |
| Neanderthal vs Feng | 2–5 | 28.57% |
| Neanderthal vs Eddy | 2–5 | 28.57% |
| Neanderthal vs Dragunov | 1–4 | 20.00% |
| Neanderthal vs Azucena | 2–3 | 40.00% |
| Neanderthal vs Victor | 5–0 | 100.00% |
| Neanderthal vs Lidia | 2–2 | 50.00% |
| Neanderthal vs Clive | 2–1 | 66.67% |
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.