| Killua vs King | 19–23 | 45.24% |
| Killua vs Jin | 12–15 | 44.44% |
| Killua vs Kazuya | 9–18 | 33.33% |
| Killua vs Law | 15–10 | 60.00% |
| Killua vs Heihachi | 10–14 | 41.67% |
| Killua vs Bryan | 10–9 | 52.63% |
| Killua vs Hwoarang | 8–10 | 44.44% |
| Killua vs Dragunov | 4–12 | 25.00% |
| Killua vs Devil Jin | 3–9 | 25.00% |
| Killua vs Reina | 3–8 | 27.27% |
| Killua vs Yoshimitsu | 7–3 | 70.00% |
| Killua vs Steve | 6–3 | 66.67% |
| Killua vs Lee | 2–5 | 28.57% |
| Killua vs Lili | 1–5 | 16.67% |
| Killua vs Leroy | 3–3 | 50.00% |
| Killua vs Victor | 3–3 | 50.00% |
| Killua vs Clive | 1–5 | 16.67% |
| Killua vs Feng | 2–3 | 40.00% |
| Killua vs Alisa | 2–3 | 40.00% |
| Killua vs Nina | 1–4 | 20.00% |
| Killua vs Jun | 1–4 | 20.00% |
| Killua vs Azucena | 1–4 | 20.00% |
| Killua vs Zafina | 0–4 | 0.00% |
| Killua vs Raven | 0–4 | 0.00% |
| Killua vs Armor King | 0–4 | 0.00% |
| Killua vs Shaheen | 1–2 | 33.33% |
| Killua vs Eddy | 3–0 | 100.00% |
| Killua vs Paul | 0–2 | 0.00% |
| Killua vs Xiaoyu | 0–2 | 0.00% |
| Killua vs Lars | 2–0 | 100.00% |
| Killua vs Lidia | 2–0 | 100.00% |
| Killua vs Fahkumram | 2–0 | 100.00% |
| Killua vs Kuma | 1–0 | 100.00% |
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.