If we only look at it from an investment perspective and ignore everything that differentiates the two cryptocurrencies, then ETH is probably a better option for those looking for higher profits. However, unlike Bitcoin, we know that ETH is centralized, that it has an unlimited supply and that not so long ago it stopped using POW and became POS.
In the long term, Bitcoin therefore seems to me to be a much better investment, and in addition, it also functions as a currency, given that there are thousands of online stores that accept it, as well as physical ones. For those whose problem is sometimes too high fees, there is always the LN option that successfully kills two birds with one stone - instantly and cheaply.