Difference among faction snipers

[Zilaa]

Hello there,
I am new to planetside, but ever since i saw first game play video i knew i want to be on those cliffs sniping. But its a lot harder to choose a faction, and i was wondering what are differences among faction snipers.
Also will bolt action snipers be unique to NC seeing how they are about using harder hitting but slower firing weapons, and well bolt action is ultimate in that regard.