| Neapolitan vs Kazuya | 46–34 | 57.50% |
| Neapolitan vs King | 35–27 | 56.45% |
| Neapolitan vs Jin | 30–32 | 48.39% |
| Neapolitan vs Lee | 37–24 | 60.66% |
| Neapolitan vs Heihachi | 42–17 | 71.19% |
| Neapolitan vs Reina | 36–21 | 63.16% |
| Neapolitan vs Steve | 38–17 | 69.09% |
| Neapolitan vs Hwoarang | 39–12 | 76.47% |
| Neapolitan vs Bryan | 31–20 | 60.78% |
| Neapolitan vs Lars | 27–21 | 56.25% |
| Neapolitan vs Eddy | 34–6 | 85.00% |
| Neapolitan vs Azucena | 23–16 | 58.97% |
| Neapolitan vs Lidia | 28–11 | 71.79% |
| Neapolitan vs Paul | 24–14 | 63.16% |
| Neapolitan vs Asuka | 23–11 | 67.65% |
| Neapolitan vs Lili | 29–5 | 85.29% |
| Neapolitan vs Dragunov | 8–22 | 26.67% |
| Neapolitan vs Victor | 12–18 | 40.00% |
| Neapolitan vs Xiaoyu | 22–7 | 75.86% |
| Neapolitan vs Feng | 13–16 | 44.83% |
| Neapolitan vs Law | 17–9 | 65.38% |
| Neapolitan vs Miary Zo | 16–10 | 61.54% |
| Neapolitan vs Raven | 15–9 | 62.50% |
| Neapolitan vs Fahkumram | 14–10 | 58.33% |
| Neapolitan vs Jun | 14–9 | 60.87% |
| Neapolitan vs Jack-8 | 14–8 | 63.64% |
| Neapolitan vs Alisa | 9–13 | 40.91% |
| Neapolitan vs Yoshimitsu | 12–9 | 57.14% |
| Neapolitan vs Devil Jin | 8–12 | 40.00% |
| Neapolitan vs Leo | 13–7 | 65.00% |
| Neapolitan vs Nina | 15–5 | 75.00% |
| Neapolitan vs Kuma | 12–7 | 63.16% |
| Neapolitan vs Leroy | 10–7 | 58.82% |
| Neapolitan vs Anna | 10–7 | 58.82% |
| Neapolitan vs Claudio | 8–7 | 53.33% |
| Neapolitan vs Clive | 8–5 | 61.54% |
| Neapolitan vs Armor King | 8–4 | 66.67% |
| Neapolitan vs Shaheen | 8–2 | 80.00% |
| Neapolitan vs Zafina | 5–2 | 71.43% |
| Neapolitan vs Panda | 4–2 | 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.