No, it i the same thing. Sure, some people do make a small site that they use te AVS script to protect and bil their surfers... but the vast majority of folks just build targeted front ends (with only the required amount of content inside) to send traffic to the AVS network and get paid.
There's no difference. There's a little more functinality available to the AVS maker but at the end of the day you are still building a front end for the overall program.
Actually, looking at the extreme rebills that AVS provides and the high payouts that sites like
www.NetVerifier.com pays making the AVS sites makes more sense if you really want to buld something.
Ya still gotta send your own traffic to your site/tour either way.