The different color on the top one is the crema from the whipped sugar, but underneath that, would most likely be similar. From the sounds of it, they aren't actually whipping the sugar first, which, to be fair, can take upwards of 2-3 minutes to produce a crema. I guess you have to pick your battles. Brown sugar vs. white sugar aside, the difference in taste from whipped vs. not is pretty negligible to me, but maybe a slightly more velvety shot.