| Karl_Lars_Nikov vs Kazuya | 111–105 | 51.39% |
| Karl_Lars_Nikov vs Jin | 106–105 | 50.24% |
| Karl_Lars_Nikov vs King | 71–82 | 46.41% |
| Karl_Lars_Nikov vs Hwoarang | 87–59 | 59.59% |
| Karl_Lars_Nikov vs Steve | 88–56 | 61.11% |
| Karl_Lars_Nikov vs Law | 69–69 | 50.00% |
| Karl_Lars_Nikov vs Bryan | 71–67 | 51.45% |
| Karl_Lars_Nikov vs Reina | 64–54 | 54.24% |
| Karl_Lars_Nikov vs Heihachi | 52–57 | 47.71% |
| Karl_Lars_Nikov vs Paul | 39–47 | 45.35% |
| Karl_Lars_Nikov vs Dragunov | 50–35 | 58.82% |
| Karl_Lars_Nikov vs Lee | 49–34–1 | 59.04% |
| Karl_Lars_Nikov vs Lili | 47–31 | 60.26% |
| Karl_Lars_Nikov vs Eddy | 36–40 | 47.37% |
| Karl_Lars_Nikov vs Yoshimitsu | 30–45 | 40.00% |
| Karl_Lars_Nikov vs Armor King | 39–35 | 52.70% |
| Karl_Lars_Nikov vs Asuka | 31–39 | 44.29% |
| Karl_Lars_Nikov vs Devil Jin | 27–43 | 38.57% |
| Karl_Lars_Nikov vs Jun | 30–37 | 44.78% |
| Karl_Lars_Nikov vs Feng | 31–35 | 46.97% |
| Karl_Lars_Nikov vs Azucena | 34–31 | 52.31% |
| Karl_Lars_Nikov vs Xiaoyu | 35–23 | 60.34% |
| Karl_Lars_Nikov vs Nina | 35–22 | 61.40% |
| Karl_Lars_Nikov vs Victor | 29–25 | 53.70% |
| Karl_Lars_Nikov vs Alisa | 23–29 | 44.23% |
| Karl_Lars_Nikov vs Lidia | 21–31 | 40.38% |
| Karl_Lars_Nikov vs Lars | 17–23 | 42.50% |
| Karl_Lars_Nikov vs Claudio | 18–19 | 48.65% |
| Karl_Lars_Nikov vs Zafina | 15–15 | 50.00% |
| Karl_Lars_Nikov vs Jack-8 | 12–17 | 41.38% |
| Karl_Lars_Nikov vs Raven | 16–13 | 55.17% |
| Karl_Lars_Nikov vs Fahkumram | 9–20 | 31.03% |
| Karl_Lars_Nikov vs Miary Zo | 9–18 | 33.33% |
| Karl_Lars_Nikov vs Shaheen | 15–10 | 60.00% |
| Karl_Lars_Nikov vs Leo | 9–14 | 39.13% |
| Karl_Lars_Nikov vs Kuma | 9–12 | 42.86% |
| Karl_Lars_Nikov vs Clive | 7–14 | 33.33% |
| Karl_Lars_Nikov vs Anna | 9–12 | 42.86% |
| Karl_Lars_Nikov vs Leroy | 7–11 | 38.89% |
| Karl_Lars_Nikov vs Panda | 5–7 | 41.67% |
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.