RE: Which will come down faster?
The Spit's light weight wasn't its advantage, its thinner wing was!
The critical Mach says that.
I have never seen a Spit competing in an unlimited air race.
Corsairs... Sea Furys.. big round motors.. lots of drag, lots of excess thrust over drag.
A Corsair could suck a Zero (1/2 the weight) into a dive.. the Zero would reach a pont where its control would be unmovable.. about 330 mph or so, while the Corsair could get past 400, zoom back up past the Zero stuck in the dive, and shoot it down.