It has nothing to do with the line being stronger than the rod or reel drag. It had to do with the thickness. Thicker line digs in less. Thicker line takes longer to abraid or cut through than thinner line.This is an advantage in rocks and wood and also around docks.Of course 50 lb braid will break almost any rod. The point is the line can withstain more abuse. Imho it will handle better also because it digs less.