That is only true if the market is unable to recognize it and price coins accordingly. Maybe the market is purely irrational, but it's certainly not a given.
I won't claim to know any more than you, mostly because ~80% of bitcoin use is in Asia and i know little about it. All of China and Japan and 2/3 of korean exchanges offer withdrawals or trading of BCH.
It's a mixture of things - it was very difficult yesterday to trade either. There could also been an influx of fiat into BCC. Also the supply of BCC is constrained by the exchanges which don't want to "interact" with it. There could be more to it.
You've commented this on like 4 other replies. I'm largely uninvolved in cryptocurrency-politics, but do you have an agenda? It seems absurd that you want your voice to be heard so much that you would literally copy paste your reply into a myriad of comment trees...