i might have said at one time its possibly more because SA refs ref other SA domestic matches which emjans SA players arev more in tune with the way SA refs interpret and blkow the laws... ("SA" is of coiurse interchagnable with other nations)
Howver, Im not sure how true this is these days I poe4rceive (?) SH where elite level players do little more than play elite level rugby with elite level refs from "all over". ??
didds