the long stroke vs short. the low range power. size and weight and
handling not being a big factor like in a car. cooling system issues.
iron block vs aluminum. all these and more are great points. And it
is very true that these HP's in cars are often at high RPM's. Peak
RPM's being lower and gaining 260 HP is good, and changes a lot of my
perspective by itself. Overheating issues make a difference as well.

The thing I found most intriguing and hadn't thought of was the weight
factor of an engine to obtain larger displacement isn't an issue as you
go larger on boats.