To me pits & amstaffs are one in the same. Pit's are to Amstaff's as Lessers are to butters. Their personalities are the same, their drive is the same, their exercise needs are the same. The only difference really is maybe perhaps their size and a true amstaff can only have a black nose (if I'm not mistaken). Again, I support anyone who wants to PROPERLY keep a pit. They NEED to be properly trained and socialized. But this goes for every dog. Having a well behaved dog who is people & dog friendly is the most rewarding thing ever.
Check out www.gopitbull.com and you'll see why they are the best dogs ever.