I understand that we use X or diameter of line for classifying tippet material, but someone is stroking me.

As an example Dai-Riki lists their 1X tippet material as .10 and 13 lb break strength. While Climax list their same .10 diameter tippet material as 12 lb (so far so good) but when I buy Berkley Vanish (cheap Fluorocarbon) that is .10, they rate it as 8 lb test. So is Dai-Riki twice as strong as the Berkley Fluoro Vanish or is the Berkley really breaking at a higher rating but they under rate it on purpose? I know that many lines have an advertised break strength and then if you go for an IGFA record it would really classify in a very different class line than the advertised break strength.

I can see where some line materials are stronger than others but 1X or any other give tippet size should be somewhat similar. Just playing with tippet material today and I decided to vent my frustration. All comments welcome.

Rick