"Takao Asayama, CEO of Tech Bureau Corp, explained that distributed ledger technology when correctly applied can “transform the revenue model of the banks”. Asayama also said that the system used in the trial could handle “4-digit transactions per second while geographically dispersed” and that further improvements are currently being worked on."

Wow! 4 digits per second on separated nodes.  That isn't a lab intranet.  That is getting close to 100,000,000 transactions per day if not over.  SETL claimed 1 billion which is by far the most I have heard, but exact details and conditions of tests weren't given, nor was it mentioned if third parties were testing at that rate.  

To put it in comparison, Visa also does 4 digits per second.  Maybe a peak of 4000 per second at a busy time on a busy day.