I Am Currently Researching The Best Camera For Macro Photography

I'm currently thinking about either a Sony A6000 with macro lens, Canon G16 (minimum focus distance=1cm), or the not yet released Nikon DL series. This decision delivers a really tough conundrum when determining what camera is best for macro photography; why? Because data for the Canon G16 doesn't specify the focus ratio, and though the Nikon DL has 20 megapixels, it's close focusing distance=3cm, while we already know from research that the Sony A6000 will have a mag. ratio of 1:1. So...we don't know which camera is best for macro photography of snowflakes?