| Neptunfish vs Jin | 50–69 | 42.02% |
| Neptunfish vs King | 49–48 | 50.52% |
| Neptunfish vs Kazuya | 32–35 | 47.76% |
| Neptunfish vs Eddy | 27–32 | 45.76% |
| Neptunfish vs Reina | 26–29 | 47.27% |
| Neptunfish vs Hwoarang | 27–27 | 50.00% |
| Neptunfish vs Steve | 22–23 | 48.89% |
| Neptunfish vs Law | 19–25 | 43.18% |
| Neptunfish vs Bryan | 13–30 | 30.23% |
| Neptunfish vs Lili | 26–16–1 | 61.90% |
| Neptunfish vs Paul | 20–22 | 47.62% |
| Neptunfish vs Yoshimitsu | 15–23 | 39.47% |
| Neptunfish vs Jun | 23–15 | 60.53% |
| Neptunfish vs Dragunov | 18–15 | 54.55% |
| Neptunfish vs Nina | 14–15 | 48.28% |
| Neptunfish vs Feng | 7–19 | 26.92% |
| Neptunfish vs Asuka | 9–13 | 40.91% |
| Neptunfish vs Leroy | 7–13 | 35.00% |
| Neptunfish vs Lidia | 12–8 | 60.00% |
| Neptunfish vs Lee | 8–11 | 42.11% |
| Neptunfish vs Victor | 9–10 | 47.37% |
| Neptunfish vs Azucena | 10–8 | 55.56% |
| Neptunfish vs Xiaoyu | 8–7 | 53.33% |
| Neptunfish vs Lars | 5–9 | 35.71% |
| Neptunfish vs Alisa | 6–8 | 42.86% |
| Neptunfish vs Leo | 6–7 | 46.15% |
| Neptunfish vs Kuma | 5–8 | 38.46% |
| Neptunfish vs Raven | 6–6 | 50.00% |
| Neptunfish vs Devil Jin | 6–3 | 66.67% |
| Neptunfish vs Claudio | 3–4 | 42.86% |
| Neptunfish vs Jack-8 | 2–2 | 50.00% |
| Neptunfish vs Shaheen | 1–3 | 25.00% |
| Neptunfish vs Panda | 0–2 | 0.00% |
| Neptunfish vs Zafina | 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.