tbh it was said in that big hacking group thing which name currently escapes me, they had a solid Windows Phone 8.1 exploit in it or something for grabs - this thing just happens to be very recent and publicized.
One can potentially argue about Apple's privacy stance vs. the government and point to its general security thus far.
Although Windows' current security and security through obscurity is something.
I take it as less use x over y and more be careful in general.