Brown sugar vs white sugar - which is actually better?

Brown sugar is healthier than white sugar, so it's the better pick when you're trying to lose weight.

Mostly false. Brown sugar is just white sugar with a little molasses added back. It has about 377 kcal per 100 g versus 386 for white - almost the same. The molasses brings a tiny trace of calcium and iron, but not enough to matter for calories. Your body handles brown sugar almost exactly like white sugar, so the colour of the spoon makes almost no difference to your weight.