GARRIGA wrote:On average, the typical American buyer wants the perception they are getting more bang for the buck versus getting what was paid for. Therefore, marketing 25# diameter line as 20# is perceived as stronger 20# and a better value. Stupid is what stupid does.
Before you paint with too broad a brush... keep in mind that in the US we use different rating systems. "Test" means that the line will not break at less than rating. "Class" (IIRC) means it will not hold more than rating. So any 20lb Test is going to break at more than 20. It's cheaper to make the line a little thicker and have higher variation in thickness than it would be to have small variations at a diameter that breaks at say 21lbs.
I don't know how Japan's ratings are setup, but I would venture to say that the higher price of Japanese lines is probably partly due to smaller variations in diameter which lets them make the line closer to it's test rating without having a couple batches weaker than the rating.
My 2 cents. But hey, I'm American so... you know.