The tweaking/optimization they did was about the RSC vs not, which Evan says drastically changes the outcome, the same way switching Vite to SWC would have. I d

The tweaking/optimization they did was about the RSC vs not, which Evan says drastically changes the outcome, the same way switching Vite to SWC would have. I don't think he suggests that Turbopack was tweaked regarding SWC. It looks like they cherry-picked a configuration pair that made Turbopack look better than what you would get if you either just followed defaults/beginner settings for both, or you optimized both.