| johnpiska vs Heihachi | 30–27 | 52.63% |
| johnpiska vs Kazuya | 21–12 | 63.64% |
| johnpiska vs King | 16–16 | 50.00% |
| johnpiska vs Reina | 17–15 | 53.12% |
| johnpiska vs Jin | 10–17 | 37.04% |
| johnpiska vs Yoshimitsu | 9–14 | 39.13% |
| johnpiska vs Hwoarang | 11–10 | 52.38% |
| johnpiska vs Dragunov | 6–15 | 28.57% |
| johnpiska vs Paul | 13–7 | 65.00% |
| johnpiska vs Steve | 8–12 | 40.00% |
| johnpiska vs Bryan | 4–15 | 21.05% |
| johnpiska vs Xiaoyu | 9–9 | 50.00% |
| johnpiska vs Lidia | 7–9 | 43.75% |
| johnpiska vs Nina | 3–12 | 20.00% |
| johnpiska vs Law | 3–11 | 21.43% |
| johnpiska vs Asuka | 6–7 | 46.15% |
| johnpiska vs Lars | 5–8 | 38.46% |
| johnpiska vs Lili | 5–6 | 45.45% |
| johnpiska vs Devil Jin | 5–5 | 50.00% |
| johnpiska vs Azucena | 5–4 | 55.56% |
| johnpiska vs Alisa | 1–7 | 12.50% |
| johnpiska vs Jun | 5–3 | 62.50% |
| johnpiska vs Anna | 5–3 | 62.50% |
| johnpiska vs Feng | 4–2 | 66.67% |
| johnpiska vs Jack-8 | 4–1 | 80.00% |
| johnpiska vs Leo | 1–4 | 20.00% |
| johnpiska vs Zafina | 1–4 | 20.00% |
| johnpiska vs Raven | 4–1 | 80.00% |
| johnpiska vs Armor King | 3–2 | 60.00% |
| johnpiska vs Miary Zo | 2–3 | 40.00% |
| johnpiska vs Lee | 4–0 | 100.00% |
| johnpiska vs Leroy | 3–1 | 75.00% |
| johnpiska vs Claudio | 0–3 | 0.00% |
| johnpiska vs Shaheen | 1–2 | 33.33% |
| johnpiska vs Eddy | 1–2 | 33.33% |
| johnpiska vs Fahkumram | 2–1 | 66.67% |
| johnpiska vs Kuma | 0–2 | 0.00% |
| johnpiska vs Panda | 0–2 | 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.