I don't quite understand the "Every 100ms faster → 1% more conversions" tag line (in the context of how Qwik improves over competitors)

AFAIK Qwik would have a similar initial load time to other server-side rendered frameworks where all you send across the wire first is the HTML and CSS to render that particular page. That's the initial page load.

From there it loads the JS which then hydrates data and turns it into a functioning React app. So what Qwik claims to improve over other solutions is the time-to-interactive metric, rather than the initial page load. Is this a correct assessment?

If so, then the "100ms -> 1% more conversions" buy line does not seem to really follow on from the actual improvements of Qwik over other methods. Anyone understand this more than me?