Not really -- I suspect it's a coincidence. Consider that different microwaves have different magnetrons with different power levels, kitchens have different av

Not really -- I suspect it's a coincidence. Consider that different microwaves have different magnetrons with different power levels, kitchens have different available line voltages, a big microwave in a modest kitchen is likely to drag down the line voltage while running, and even the food put into the microwave is likely to vary in its mass and density (for a given portion size). That's a lot of uncontrolled variables. It's likely that, if you cook the same thing every day, you may unconsciously adjust the portion size to match up with your microwave's traits. > A great deal of thought must have gone into the power settings? Believe me, users are expected to decide which settings work for them. Microwave power levels typically fall in the range between 600 and 1200 watts, so obviously a power setting of 10 on the small unit should equal 5 on the large one -- or, to put it a different way, one minute on the 600 watt unit should equal 30 seconds on the large unit.