By lowering the compression (swept area) there is more area for the boost charge to fill (volume) so more power

More boost pressure will also adds power but past 15psi the 6.5 lower end gets over stressed and ...................

The others , D-Max, Cumm, P Stroke can use lots more boost than we can, upwards of 50psi in some.

But I still like it, 80% of a D-Max at 20% of the price.