Better is a general statement, if you are asking about gas price then BNB is preferable because its low. In other terms, ETH is much better. If the eth gas fee is solved today, usage will Tripple like we use to have.
Apart from that for me basically every network whether it's Ethereum or Binance Smart Chain has its own advantages and disadvantages,
Indeed, what is most highlighted is that the gas costs of Binance Smart Chain are lower when compared to Ethereum