There is a fun site that Kihaku created, where you can compare (or just look at single shots) different doll molds/sizes. The photos are owner photos, not factory photos, so there is some customization and a bit of hybrid hands here and there.
You first go to this page:
And then scroll down to the exclamation point (!) at the bottom of the page, where the instructions are. You can click on two dolls and it will load the images like Layers in photoshop (there must be some interesting coding on that page) and then use your cursor to move the photos around to line up on the grid. If you hit the edge of your screen, you will need to pull down your own window before you can move the doll image further down. Depending on where you are, it's Not Safe for Work (I have to add the stupid Prudery Strips to photos of plastic dolls here because of Blogger's guidelines) but of course the dolls are bare so you can compare the sculpts. The list is huge of dolls you can look at, plus it's fun to see if you recognize anyone. I wonder if that is Torukia up there in the mug shot. Those are the famous Vesuvia Scorpion Heels, too. :D