Yes and no. National labs are competing for the same pool of applicants as universities, and there are certain advantages - more research time, usually better infrastructure, and often somewhat better salaries, if only by 12/11ths.
On the other hand, National Labs are big, and as such have advantages - they can usually hire when the person they want is available rather than waiting for a line position in the right subfield, and they can afford to take on more specialized people than a university can.