I would like to know the real diff. i realize 4 strokes last longer and sound better, and less fuel. but some fact bother me, as i just bought a 4 stroke saito.

how can 4 strokes turn bigger props then 2 strokes when there hp rating is lower at a lower rpm then 2 strokes.? im debating on buying a 60 2 stroke for what i intended on my siato 72 to do.

shed some light please