Project Beale does not fulfill the same role because it forces the Corporation to play other agendas and, hence, not win with just one of them.
The beauty of World Domination is that you don’t need anything else. You don’t need any other agenda to win, just one and hence you can build your entire deck around it. You cannot build your entire NBN deck around Project Beale 1 turn wins because you have other agendas taking space in your deck.
(Note that this requieres World Domination to have a “may play up to 6 copies in a deck” clause)