BTC is still dominant. It has the biggest user base and the biggest industry. Still, it faces a challenge in scaling up for wider use.Bitcoin now can't handle more than six or seven transactions a second. Compare that with credit cards, which involve thousands of transactions per second, so the criticism about bitcoin's ability to be useful at larger scales is understandable.The scalability challenge results in high fees as well.
in fact, both have different advantages and disadvantages. it all depends on how you use it. I think eth is still superior in terms of stability, and also in the form of fee. well, as far as I know, bitcoin is still superior, but I may still prefer eth in the use of transactions.