Bcash cost of production (difficulty) is now being slashed by 20% per block for the next 6 blocks. Expect miners to follow cost of production slavishly. Forking guys have no idea what they have unleashed ... it will become apparent soon now.
I understand now. We can view the game as one player has ~51% need to attack. They are being economically rational. How does the game work when one player has ~51%(some uncertainty)?