Hi avycat,
The first part is roughly accurate and the second part is only partly accurate (the ILD’s they posted are correct for blended Talalay made by Latex International) but also misleading.
ILD is only one of several factors that determines the softness of a foam (it’s only measured at 25% compression in most cases and almost nobody sinks into a layer by exactly 25%)
You can read a little more about the different types of latex in post #6 here.
You can also read more about ILD comparisons between Dunlop and Talalay and polyfoam (which are not apples to apples comparisons) in post #6 here. Their comments about comparing Talalay to Dunlop are somewhat misleading IMO. It is true that softer foam of all types including latex will be less durable than firmer foams but latex as a group is more durable than any other foam in a comparable ILD. You can read more about the many factors that affect durability in post #4 here.
This type of overly simplified information is usually only partly accurate and there is usually much more to the story.
Having said that I have talked with Deborah at naturalmattressco and they are included in the list of better options and possibilities in the Minneapolis area in post #2 here.
Phoenix