both are good products but for the marketing  , i dont see eth being promoted but eth is already popular so it can still stand out without a solid marketing while bnb is also promoted by binance  . if not because of binance i dont think bnb will survive  .

both coins are good for profits but bnb is more cheaper so it gives an illusion that we can buy more whole coin while on eth you may find it hard to buy 1 whole coin but you can still earn good even on small chunks since value of eth is already huge