It is crazy if someone thinks that BCC will have a higher value than BTC. We do not have any basis to confirm it, BCC is just a weak currency.
I think it will have the same fortune like ETC, you can see that ethereum classic came with the fork of ethereum and the price of ethereum is higher than the ethereum classic. I am also sure that the price of bitcoin will be higher than the bitcoin cash. But still it depend on the demand of the people that if they will adopt it higher then its price will increase while not if they will not like to adopt bitcoin cash.