BCH is implementing a change to the difficulty adjustment algorithm on Nov 13 that will do a better job of maintaining 10 minute block times regardless of mining power:
BTC holders are dumping BTC and buying BCH. BTC has lost $26Bil in a week, BCH has gained $20bil in the same time. Price is rising rapidly. Miners are finally going to flock to BCH because there will be more stability in block times and less volatility for them. BTC is grinding to a halt with long block times and unconfirmed transactions.
I understand your point, but this rise in such little time is very suspicious. Also does not explain, why BCH went from $2,800 to $1,500 in 30 minutes (https://imgur.com/a/VQiYi), when korean exchanges were down. No pumps were possible.