Basically I don't see any difference accept extra gassfee. Historically, Ethereum gas fees have been much higher than ones on BSC. The highest average seen was in May 2021 at $68.72. This trend has begun to change, but Ethereum is still currently more expensive.
In addition to the extra gas fee, there is another difference that is the transaction speed. High transaction speed with lowest fee in Binance smart chain. So I prefer this network more than Ethereum network.