This is quite correct,

if money is not a problem you may be better off
buying a 91 4 stroke instead of a 61 2 stroke since they pretty much very similar in size nowadays, Saito is even lighter.

With the 91 4 stroke you will be able to turn a 14" prop
rather than a 12" with a 2 stroke.
Having more torque also means more flexibility in prop/pitch choices across the power band.