| WhySoSerious vs King | 79–99 | 44.38% |
| WhySoSerious vs Jin | 86–73 | 54.09% |
| WhySoSerious vs Law | 90–41 | 68.70% |
| WhySoSerious vs Kazuya | 70–54 | 56.45% |
| WhySoSerious vs Bryan | 66–45 | 59.46% |
| WhySoSerious vs Dragunov | 46–51 | 47.42% |
| WhySoSerious vs Yoshimitsu | 50–37 | 57.47% |
| WhySoSerious vs Paul | 53–27 | 66.25% |
| WhySoSerious vs Devil Jin | 25–45 | 35.71% |
| WhySoSerious vs Hwoarang | 32–36 | 47.06% |
| WhySoSerious vs Armor King | 31–35 | 46.97% |
| WhySoSerious vs Lee | 29–25 | 53.70% |
| WhySoSerious vs Reina | 29–25 | 53.70% |
| WhySoSerious vs Victor | 22–28 | 44.00% |
| WhySoSerious vs Alisa | 15–29 | 34.09% |
| WhySoSerious vs Asuka | 16–24 | 40.00% |
| WhySoSerious vs Azucena | 20–20 | 50.00% |
| WhySoSerious vs Steve | 26–13 | 66.67% |
| WhySoSerious vs Feng | 24–15 | 61.54% |
| WhySoSerious vs Heihachi | 21–16 | 56.76% |
| WhySoSerious vs Nina | 21–13 | 61.76% |
| WhySoSerious vs Lili | 19–14 | 57.58% |
| WhySoSerious vs Jun | 14–17 | 45.16% |
| WhySoSerious vs Claudio | 9–17 | 34.62% |
| WhySoSerious vs Zafina | 9–16 | 36.00% |
| WhySoSerious vs Leroy | 10–13 | 43.48% |
| WhySoSerious vs Eddy | 12–10 | 54.55% |
| WhySoSerious vs Lars | 12–9 | 57.14% |
| WhySoSerious vs Jack-8 | 4–16 | 20.00% |
| WhySoSerious vs Xiaoyu | 11–7 | 61.11% |
| WhySoSerious vs Miary Zo | 3–13 | 18.75% |
| WhySoSerious vs Leo | 6–8 | 42.86% |
| WhySoSerious vs Shaheen | 7–7 | 50.00% |
| WhySoSerious vs Anna | 10–4 | 71.43% |
| WhySoSerious vs Clive | 7–4 | 63.64% |
| WhySoSerious vs Fahkumram | 4–6 | 40.00% |
| WhySoSerious vs Panda | 1–7 | 12.50% |
| WhySoSerious vs Raven | 6–2 | 75.00% |
| WhySoSerious vs Kuma | 3–4 | 42.86% |
| WhySoSerious vs Lidia | 1–1 | 50.00% |
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.