bitcoin is techically more superior then ETH ,yes but the use cases are bigger for etheruem now!
real utility for ETH ARE BIGGER.
ETH: defi, icos, dapps, stable coins.
also the very good liquitity !!
BITCOIN ?
yes you can buy thigns with btc but so you can do with ETH.
I know where you are going with this but the fact is Bitcoin have the strongest foundation, people and the community will keep supporting bitcoin more than any other no matter how good they turn out to be, remember that Bitcoin is the first of its kind, that says alot.