Hmm someone edited what I replied to earlier, my response doesn't even make sense now
As far as shifting speed goes, I think it's really good for an auto with paddle shifters. On a straight line, pedal to the floor - I think an experienced 6MT driver can shift faster, because those are the easiest/fastest shifts to make and there's nothing else going on. But for curvy stuff where one would be shifting "carefully" and watching car balance, etc, I think the 7AT will hold its own against a 6MT driver just fine.