Comparing cats and dogs here. You'll never get the two camps to agree.

A four-stroke is about 75% less horsepowerful than a two-stroke of the same displacement. But that is at full RPM. A two stroke develops most of it's power at the top RPM. A four stroke has a much more even power curve. It has much more "low" and "middle" than a two. And, since it can spin a larger prop a four will accelerate a model better than a two; though it will probably still be behind in a quarter mile run. They weigh a bit more because of the added parts, but when you add in the relatively small and light spun aluminum muffer of a four vs the large, cast muffler of a two it narrows the difference some.

The larger prop will also give better braking effect at low RPM. That helps in landings and on pattern ships where they have to do the two downward legs of a square or diamond "loop" at the same speed as the upward legs.

So the best of all worlds is a GAS fueled two stroke swinging a really big prop.