like others mentioned transient response (this may be very critical at the track and mimic lift-off oversteer) ..also there are so many different variations of each options (turbo vs SC), positive displacement, centrifugal type, journal bearing, ball bearing, single vs twin scroll ..list goes on.. each has their pros and cons so one size doesn't fit all
if you're ultimate goal is to make big hp then turbo it is, never really understood why people choose this platform to begin with, if that's what they're after though
