| Porfirion vs Kazuya | 18–23 | 43.90% |
| Porfirion vs King | 19–20 | 48.72% |
| Porfirion vs Yoshimitsu | 12–10 | 54.55% |
| Porfirion vs Jin | 7–11 | 38.89% |
| Porfirion vs Bryan | 9–9 | 50.00% |
| Porfirion vs Asuka | 9–8 | 52.94% |
| Porfirion vs Steve | 6–10 | 37.50% |
| Porfirion vs Devil Jin | 3–11 | 21.43% |
| Porfirion vs Dragunov | 8–6 | 57.14% |
| Porfirion vs Law | 6–7 | 46.15% |
| Porfirion vs Reina | 5–7 | 41.67% |
| Porfirion vs Eddy | 5–7 | 41.67% |
| Porfirion vs Heihachi | 8–4 | 66.67% |
| Porfirion vs Hwoarang | 2–9 | 18.18% |
| Porfirion vs Lili | 5–5 | 50.00% |
| Porfirion vs Victor | 7–3 | 70.00% |
| Porfirion vs Clive | 3–6 | 33.33% |
| Porfirion vs Anna | 3–6 | 33.33% |
| Porfirion vs Xiaoyu | 6–2 | 75.00% |
| Porfirion vs Azucena | 7–1 | 87.50% |
| Porfirion vs Lars | 2–5 | 28.57% |
| Porfirion vs Paul | 3–3 | 50.00% |
| Porfirion vs Feng | 1–5 | 16.67% |
| Porfirion vs Leo | 1–5 | 16.67% |
| Porfirion vs Nina | 3–3 | 50.00% |
| Porfirion vs Jack-8 | 0–5 | 0.00% |
| Porfirion vs Jun | 4–0 | 100.00% |
| Porfirion vs Alisa | 2–0 | 100.00% |
| Porfirion vs Claudio | 2–0 | 100.00% |
| Porfirion vs Lee | 2–0 | 100.00% |
| Porfirion vs Panda | 0–2 | 0.00% |
| Porfirion vs Zafina | 2–0 | 100.00% |
| Porfirion vs Raven | 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.