The Nobel Prize in Physics in 1980 was awarded to James Cronin and Val Fitch for their discovery of a violation of Charge and Parity Invariance, in which the neutral kaon's quarks change into their corresponding antiquarks, and vice-versa. However, the vice-versa does not occur with the same probability and shows a reason for the matter-antimatter imbalance in the universe.
Every article nowadays in magazines and websites seems to say that there has been no observed asymmetry between matter and antimatter, except there was already a Nobel Prize awarded for one such observation.
Why is this violation of CP invariance not sufficient enough for certain researchers and articles to describe the dominance of matter over antimatter? Wouldn't this imbalance in the nature of quarks and antiquarks be extremely important and consequential in the moments after the Big Bang, especially in the moments where the universe was a quark-gluon plasma?