Why is Pong a lesser work of art than Journey? I think games like Pong, Tetris, Asteroids etc are more ideal for making a case for games as a unique medium, be

Why is Pong a lesser work of art than Journey? I think games like Pong, Tetris, Asteroids etc are more ideal for making a case for games as a unique medium, because instead of deferring to cinematic or literary elements (as most art games are wont to do), they instead have a purity of form and function not dissimilar to a Josef Albers or Steve Reich piece.