This isn't including the other 50% miners mine. So using the same example, there should be $57542 daily liquidity at 400M market cap.
Its a very good conversation you are all having, but its all very simple.
Darkcoin has a marketcap of 10 million dollars! In what universe would a currency worth 10million total, handle a daily transaction of hundreds of thousands of dollars without effecting the marketcap?
Surly due to supply and demand the marketcap would rise to a level that is considered "worth it".
Eg, Coinbase start to block transactions to say a (poker site) and people want to play poker, they can just use dark and pay what they consider to be worth playing poker online.
This tells me Darkcoin atm is just not in demand and explains the low market cap, which then results in someone not being able to transact the 100,000s of dollars you are talking about.
Marketcap will rise with use of Darkcoin, allowing bigger transactions to take place.
Bingo.