Butterfly Marketing vs Wordpress???

I am wondering what the benefit of a Butterfly Marketing Site is over a Wordpress site with a membership plugin?

I built a site with Optimizepress and have a free offer squeeze page to a upsell / downsell. The free offer is in the membership area and is not secured. The entire membership area is run with wishlist and the paid upsell content is secured and requires login. I have also added an affiliate tab which will contain a button for auto adding your affiliate link into all the tools.

I have been told that the butterfly marketing site is better because it has an integrated affiliate program that makes all your members affiliates automatically.

Using clickbank as the payment processor how is this any different then what I set up in wordpress?? you still require a clickbank id to promote as an affiliate so a butterfly sit wouldn't beable to do this automatically it would have to have the same auto fill button where you would place your clickbank ID right??

Any help understanding this would be appreciated as I am trying to decide if I should leave my setup the way it is or convert it to a butterfly site.

Mick