i dug around the site a bit. they seem to hide the sources for their data.

it's obvious they are cherry-picking data, omitting many dozens of exchanges and markets. the idea that ETH has a deeper market than BTC is completely laughable. and they're saying that XRP has 91% of the market depth of BTC? over the top ridiculous.

also, basing this type of assessment on order books alone is neglecting to account for all OTC and p2p trading.