I am not sure why SE doesn't support transfer of macros/gearsets between platforms. Yes, they're in different formats, but I would think that it would relatively straightforward to allow PC <==> PS3 or PC <==> PS4 transfers in much the same way that they currently allow PS3 --> PS4 transfers (though of course, they would need to use SE's servers rather than Sony's).

As it is, it's very, very difficult to move between platforms.