I don't understand the technicals enough, but I have had this theory: What if BitcoinCash is indeed controlled by one faction, who control more than 51% of the network. I have heard it said that in such a case, double spend actions are possible. Now, I don't know if such a double spend would show up clearly in the blockchain - but would this technically allow them to secretly 'create' extra BitcoinCash out of thin air, which can then be used to manipulate pretty much every other crypto price since they are all interlinked through market places? Maybe somebody can clear up if this is at all a possibility.