It's very glaring that eth is more decentralized but as for bsc, bsc as an advantages of
1. BSC is more cheaper when compare to ETH and this features is making BSC becomes puoplar and there are several projects that has switch from ETH to BSC.
2. The ethereum gas fee is very high and BSC has taken the advantage by given less gas fee and this hasade many projects coming to BSC.

BSC still have a long way to go, they need to be more decentralized, people will prefer decentralized over centralized network.