Duke is generally considered a top-16 school, who attract recruiters from around the country.
As for UT-Austin, UNC and USC - they are excellent regional schools, attracting recruiters mostly from around the region. That's what "pull" really means - it's not that you can't get a job in NYC with a UT degree - it's just that if you are targeting companies based outside of Texas, you will likely have to do a lot more of your own independent legwork and secure interviews, job leads, etc. on your own.
But as you probably know as soon as you walk into an interview, it's not the brand on your resume, but all about you the individual.
Alex Chu
alex@mbaapply.com
www.mbaapply.com
http://mbaapply.blogspot.com