Also, miners tolerance for losing money is low from supporting a minority chain that dies off. mining pools that initially support the loser cannot afford this as many would lose $$$
If they do support a minority chain, they will quickly change to the majority to recoup funds, therefore ensuring that we do not have a persistent chain split, and retain one BCH chain
However both chains would include the upgraded difficulty adjustment algorithm so the minority chain could technically stay afloat on the back of a single miner using a Motorola 68k
