BCH improved multiple features of Bitcoin while maintaining most of the original code.

First of all, it scales. Second, it's somewhat faster (although still slow AF in my opinion) in block times. BCH has active governance and while their SmartBCH chain is beta at best, they are progressive. It's been adopted by a lot of social media sites as a "cash" form of Bitcoin but that isn't my evaluation; it's still too slow at nearly 2x the speed of BTC and Bitcoin won't scale.

BCH could effectively do what people want BTC to do in the marketplace if they simply swapped the two. I see BCH as a failed marketing model because they are in competition with the correlation of the currency they forked from which doesn't scale, to fix scaling.

PoW in general is outdated. Work smarter, not harder.