I didn't say it isn't a battleground state. I said it isn't supposed to be. It's supposed to be red. It's not lopsidedly red, and a Democrat can win it. However, an average Republican nominee should win it without great effort, and a strong Republican nominee should win it decisively, as Bush did both times. A Republican candidate who loses North Carolina is weak, and if it takes a lot of effort for him to win it, that doesn't bode well.
The problem is that winning all of Romney's states isn't a foregone conclusion. Not only is he losing in North Carolina, he's
losing in Arizona. That's 26 electoral votes between the two. If he loses either one or both, he's going to have to make up for them in other states that are generally more hostile to Republicans. And of course, that assumes that he carries Ohio, Florida, and Pennsylvania, even though he's losing in all three.