I fear the only winner of such a battle will be a third one. Ethereum has the best cards at the moment to be that winner.
But anyway solving the mining power concentration in such an situation would be a great side-effect. Bitcoins value (for both chains) will probably lose a lot and the mainstrain will celebrate another “Bitcoin is dead” event.
The real frustrating in the whole debate is to see how simple it is to split a community of educated people. More science, less Reddit. The flight to the moon was not done by trolls….