People trying to dump BCC should have no effect on BTC - they are separate blockchains as a hard fork. Unless you are saying people will sell all their BTC to speculate in BCC which seems unlikely. The fact is BTC can go up and BCC can go up. Bitcoin is getting a bit more distributed and traded by a large number of people so I doubt "whales" can manipulate it at will. Would be interesting see what whales exist in bitcoin. Even if someone controls one million bitcoin that is less than 1/16 th of the total supply now.