I guess the big anti-dive geometry is to prevent the weight transfer forward and get the best platform for the rear harvesting to happen.
Other than the engine power the amount of harvesting that can happen in a lap with braking is going to be key for laptime. 3 sec additional deployment in a lap is going to be a lot as beneficial as having additional 30 hp form ICE.
That would be around 0.6 sec a lap time gain.