so if i understand this right, you asked google if it would be OK if you had a couple of almost identical websites with ads on them? well i guess there is no crime in having duplicate sites. i guess lots of big companies have "mirror" sites which is basically the same thing. though your email to them was not very clear. you might get a confused response.
I am guessing you are worried about the bulletin issue with Myspace vs Adsense which seems to result in people getting banned. If that is the case then I am sure its a good question to fire at them, I would be interested to hear their 'auto' response.