Which of them two has the highest transaction?
If people move to BCH, I'll just dump more of my fiat to BTC because BCH will also face the same problem sooner or later.
They will experience increase against fiat, but the fee is an order of magnitude lower. They'd need a much higher price and/or a much higher transaction volume to match BTC.
The promise of a 1 cent fee forever is a lie, but i suspect they'll just increase the blocksize again if it ever gets too high.
They don't believe in segwit and lightning because they represent gaming, etc. and don't want potential auditing and restrictions imposed. i think the fear is lightning networks could be forced to blacklist grey markets, who have carried bitcoin to where it is today