We also think this is due to wash trading. According to a report form the blockchaintransparency.org, 99.37% of their trading is from API trading. This means that the vast vast majority is wash trading. This is compared to Binance which is pretty much close to 100% real volume. We would say Binance is still a huge leader by comparison. It would be interesting to see how Coinmarket Cap adjusted the volume. Cheers, web.cbnt.io