This idea has been out there for about 15 years, spurred largely by CEO Prem Watsa's shameless immitation of B00-Fay. There is a historical difference between W.E.B. and Prem: W.E.B. has always tried to buy good companies in dull industries; Prem buys mediocre and bad companies in dull industries.
Yes, there is a historical difference between Berkshire and FRFHF.
FRFHF has compounded book value at a much greater rate than Warren Buffett.
Take a look at a 10 yr chart of FRFHF vs BRK-B.
Believe it or not FRFHF is still a bargain (currently near book value)