Guess that is hardly a mainstream motor though?
Going on the weight of what I am interested in (115hp), you're talking 190-ish kilos for a four stroke and the Johnson I have weighs about 150 so that's about a 25 percent weight saving with the 2 stroke, but I would rather have a 4 stroke that runs like a sewing machine and burns less fuel, and carry an extra 1/2 person around for that privilege
I wouldn't completely rule out one of the new generation 2 strokes but it does seem that people that want reliability (i.e. commercial operator) go for 4 stroke every time and reliability is my main priority given the remoteness from anybody who knows what to do with a modern engine if it breaks!
Edited to say that according to the makers the Opti 115 and Etec 115 both tip the scales at 170 kg so the difference is only the weight of a full jerry can when you compare modern engines