Having seen both together, I think that I prefer the platinum version overall.
But that said, I associate the color of the PT metal and the lighter dial with good weather, sunny days, more like summer time. At the same time, I really love the olive dial and warmer metal of the WG, which I associate more with winter time. And I see it a bit more versatile too.
In addition, my wrist changes a lot with the weather, so I cannot use the same bracelet in winter and summer, unless I remove/add a link. This concerns me a bit with the DD, to be honest, which lacks any kind of micro adjustment. I used to play with the links in the past, but the screws get loose and I almost lost an AP once.
So long story short, I prefer to start with the WG for the cold months (many more for me unfortunately) and we'll see if I end up adding the PT too or not, or even considering a trade, who knows... π