Based on non conjecture (I have used both) the snow peak is not as efficient as the jetboil. The jetboil is amazingly efficient. It also takes about somwhere in my estimtion a month of cooking by me until the weight of the jetboil setup itself is offset by any fuel savings about it being "more efficient".

So the the point of the discussion, I own and use a snow peak stove. I don't bother with the fancy windcreen and carry a piece of cake pan or msr foil windscreen to use with it. I personally would not buy and carry a big heavy jetboil setup.