BTC = USD - it is the same, please 
Why do you think it is the same, same on what.
Bitcoin is a digital (virtual) currency and dollar is physical and digital currency too.
Also bitcoin is a platform itself, it is all open, and all transaction are visible to the public.
That was a troll posr I guess.
Of course BTC is not equal to USD. If you have any doubt about this statement please take a look http://preev.com/
It is obviously more than USD x 300. So they are not equal. )