One school of thought is that because there is so much realtive rotational intertia, small mistakes in lauch mistake are magnified significantly because instead of dropping 50 rm for a mistake, the same mistake costs you 500 rpm. I.E. with such fluid revving, it is easier to "bog" by losing your rpm on launch.

The theory is fairly sound, and a lightened flywheel takes alot of practice. I am terrible with mine so far.