the reason is that binance isn't as big as people think they are. they have thinner order books than gdax. it's obvious that binance fakes their volumes.
i and other experienced traders have noticed for years now their books are too thin to justify their inflated volumes. CZ was the architect of okcoin's volumizer bots and there's no doubt in my mind he further tweaked that model and applied it to binance. there's a reason why you can't even toggle to a full order book and the desktop view only shows orders near the spread. even depth watching services like
https://cryptowat.ch/markets/binance/btc/usdt only show < 200 BTC depth down to $3800 and only < 400 BTC depth to $3400. sometimes it shows much less. this is exactly how okcoin and huobi's books used to look when they were supposedly trading
millions of BTC per day each. CZ is slightly more subtle now.
thin order books = big slippage. the only reason people think binance is "bigger" is because they inject fake volume and coinbase doesn't. liquidity speaks for itself.
I Have bitcoin in both, on Binance and Coinbase. On Binance it's volatility seems to be much greater. I saw a $100 fluctuation on Binance where coinbase was around $30. What causes this big difference?
Obviously, It's because of Binance's trading volume. And it has been proven, well at least there was a report than Binance wasn't able in any wash trading (
https://www.blockchaintransparency.org/).
proven by whom? oh, some anonymous group who popped up out of nowhere in the middle of the CFTC investigation of bitfinex/tether for market manipulation? and they have zero credentials or credible research? yeah.....
this site was spun up by people connected to bitfinex and tether IMO. there's nothing convincing about their reports.