To Mr. Morrison - its only our thinking. Revell has made different upper hull fittings, and of course different rigging. By the way, its is clear, that Nina's rigging was changed during expedition before going to Atlantic, and looked alike Pinta's rigging.
So i do not see right arguments, why lower hull lines of the same type of ships should look different. Yes, Pinta was slightly bigger than Nina, but that is still acceptable to "imagination models", and all Columbus fleet ships are such. We can only discuss, but no one can say 100% right.
To Mr. Tilley - if you dont see a problem to display models of Olympic and Titanic side by side, while they both are from the same class and both have the same hull except of decks fitting, i simply don't understand logic of your proposal to do not display Revells / Hellers "imagination models" of the same type of ships - Pinta and Nina side by side, becouse they have same lower hull part lines, and all other differs.