The chap was Chris Witter who is Ohlins general manager of the test and distribution centre at the ring.
I think someone is telling you porkies. Ohlins japan are 9kg front and 7kg rear as confirmed here:
http://ohlins.czj.jp/auto/Item/BTO-ZN6_DFV_HAL.html
That setup will definitely not be as tail happy as the MI20. If you look at other japanese coilovers like the HKS you will see they are also harder at the front. HKS being 6kg front and 4kg rear.