130 is like a short, dense version of a 188, which is a smaller, more compact version of the 187 - 187's for dusting MSFs and other powders over large areas or for gals who like a large brush for the cheeks. 188 is more just for blushes, since it's not as wide as that 187. 130, being small, short and dense, is really loved by some for applying foundation and cream products for that smooth stippled effect, but personally I prefer a 190 for both, because I find it easier to control (being stiffer and the flat edge is good for nooks and crannies and contoured lines), and i just like the patting and sweeping motion you can do with it - stippling does nothing special for my skin texture anyhow
I know some folks think the 190 is "old-fashioned", but it works for me! It'll leave the very occasional hair, but I just take a tweezer and lift it out if it does.