I always enter NB's ingredients into a calculator and check things like OG and IBUs. I don't know what calculations they use, but if just follow their recipes you'll likely end up with a beer that is way to bitter and lower in gravity.
Their extra pale ale was my second all-grain and I didn't check their recipe before brewing it. I still can't drink this beer, a year later because it has a B:G of like 1.7. I probably won't ever drink it. I think that if you adjust the hop additions based on their actual AA% and the efficiency of your system, it would be a pretty standard APA.