Mary Konior's Large Cross is one of my favorite crosses, but it truly is 'large'. I've tatted it in the past with size 20 thread and it ends up as big as a page in a book! (Ok, my book does suggest size 40 thread, but I have such an abundance of beautiful colors in size 20). The sulky thread is the perfect size, and as I've said before, it would compare to size 40. Maybe I should start using the recommended thread sizes?
In any case, a beautiful pattern is even more wonderful with the right thread!