From the linked article:

> Note that we are comparing released versions; Brave 0.24.0 is based on Chromium build 69.0.3497.100, while Brave Core 0.55.12 uses a newer Chromium build 70.0.3538.45. We do not expect the move to a later underlying Chromium version to be responsible for significant performance variations. We don’t observe a statistically significant difference for unthrottled measurements—in fact, Chrome 70 is sightly slower for the sites we considered.