For me, ETH will always be better than BSC. Due to the low gas in ETH I recently started using ETH even more often than BSC. There are no innovative projects in BSC so I don't think I will be here for a very long time.
I haven't heard that ethereum has low gas costs, can you show us that ethereum gas costs are cheap, but when it comes to innovative projects, ethereum has it, whereas in BSC only some projects have it, only transaction fees in BNB is still in the cheap category at this time, therefore both have different audiences, depending on the needs that people want.