Same issue in UNO, maybe more. Hope Gliss can double check the data source. This will be surely a lot of work.
I have been regularly checking coinmarketcap for trading on exchange, usually both are consistent. But these days, some coins definitely have issues.
This site can provide some idea of virtual currency activity, but cannot be relied upon. One example is
http://coinmarketcap.com/asc_30.html, Just take a look. At no point did ASC crash and then rebound. Coinmarketcap makes it appear that the coin is increasing in value, when in fact it has done nothing but gradually decline for a few days.
Glitches like this (along with so many others) make this site a very unreliable source of information. All data really should be confirmed on the exchange; often an exchange will show the true story.