The core difference between the hybrid fork that Bitcore presents itself as and the hard fork that Bitcoin Cash, Bitcoin Diamond and others are, is that the Bitcore protocol separated from the network entirely and also decided not to use the 'Bitcoin' prefix......!!!!!!
In addition, Bitcore does not have a heavy blockchain of Bitcoin, which have hardforks. The blockchain is easy to download, it weighs less than 500 mb. The algorithm is protected from asics.