That's right, .3 x .7 vs .2 x .7 does not mean they are identical. What they do is replicate the sound and in some cases, such as the more recent production Shure styli, improve upon them. This is really nit-picky shit. Jico is currently the only stylus manufacturer that does an excellent job at manufacturing styli for vintage cartridges. The others, for the most part are cheap knock-offs. The operable word there is "cheap" because that's what people want.