The nuanced finding suggests the agency believes the totality of evidence makes a lab origin more likely than a natural origin. But the agency’s assessment assigns a low degree of confidence to this conclusion, suggesting the evidence is deficient, inconclusive or contradictory.
The difference is that it’d allow the attribution of negligence which could be used for geopolitical gain.
E.g. “Government X’s bad management of COVID wouldn’t have been an issue if China wasn’t leaking deadly diseases out of research institutions. So Government X deserves compensation for the harm China caused to the people of Government X. So X will institute trade sanctions of China.”