Apparently the reason it is called a "try" was because if the team got the ball over the line they then got to "try" for a goal kick. The original version of the game had no points for a "try" - it was just a chance to kick a goalSo South Africa has won 4 world cups and only scored 2 try's in all finals winand that was in one final 2019.
New Zealand has won 3 world cups and has scored 7 try's in all finals win with 3 1987, 1 2011 and 3 2015.
Australia has won 2 world cups and has scored three try's in all finals win 1 in 1991 and 2 in 1999.
England has won 1 world cup and has scored 1 try in final win in 2003.
seems that union has kept hold onto the original philosophy while other versions of the sport have grown up