They already surpassed the price of bitcoin cash. There is no doubt in this market behavior. Eth platform has proficient team and doing what needs to be done. My guess is that, eth will be a long way ahead from bch in the near future.

It already was. Bitcoin cash has significantly higher scarcity so Ether had a huge lead on market cap.
Both coins are going to introduce amazing innovative tech in 2019 but Ether has tons more corporate support so I guess the innovations will be better advertised there. Plus the big ICO selloff has almost finished.