As I know Binance own about 82% of BNBs, so things are even worse. I consider Binance to be one of the most centralised platform actually. There are only 21 people who can confirm transactions. Compare it to thousands of miners in Ethereum network or Bitcoin and understand to what extent this project is centralised .
Comparing Eth with BNB is like comparing apple with oranges. Eth is completely decentralised crypto that is maintained by its community of developers, while BNB is centralised coin whose blockchain is controlled by Binance. Seeing the rise of crypto many centralized coins were launched like EOS, XRP etc. But they are against the ideology of crypto. I am not surprised whether binance has 82% or 50% of BNB, since they control the blockchain they can manipulate token distribution according to there desires.