I knew Chelsea was a heavy wetter because I would hear stories about people using certain nappies for 3-4+ hours with no leaks & I couldn't even get them to hold 1 wee without leaking. Also when you hear people talking about using certain nappies successfully overnight eg Baby Beehinds Bamboo & yet that is a standard day nappy for us that doesn't always contain 1 wee without leaks.
I guess what I'm saying is I judge what sort of wetter Chelsea is by comparing our success with various nappies to other peoples