I don't think it will get nerfed... but I know people will cry after the beta about it. We're only seeing a compilation video So its kinda hard to compare. Mag size is going to make a difference. Plus if their variance in map sizes is true, then sniping would be at a bigger disadvantage on the map bigger than Caspian, and small maps. I doubt sniping will be as deadly on console as well. I think the current map could be considered a medium-large map where they could test out everything the best. I've wall hugged and stayed in buildings to cap forever, These people out in the open are kinda silly. Maybe it just me, I try not to run out in open field much unless I absolutely have to.
The best thing about the new wall-climb feature is that its going to make it even harder to camp. No more camping in the corner now that someone can just jump the wall and get you. But it also provides a quick get away from snipers instead of having to run all the way around the structure leaving yourself vulnerable to a lead off shot.