1 less strain on the bow at a given draw
2 less strain on the bow when braced
3 possible increase in cast for a given bow
4 the low brace probably increased the life of the bow by reducing set
for example Tim Baker stated that if you increase the brace on your bow 1 inche, it will but the same strain as drawing your bow 2 more inches,, I am quoting from memory but you get the idea,,
a higher brace is just more strain on the bow,, if you can get the arrow to shoot well at the lower brace,, it is to the bows advantage,, more cast with less strain,,
5, for those of you that are worried about the feather making a noise at low brace,, cut that feather shorter
or slightly draw the bow past the feather as game approaches,,