At full strength, Joshua's form was still that of a Giant God who could easily crushed planets—even if it was a clone.
Small worlds before him were ping-pong balls to be toyed with between his fingers. Even mid-sized worlds were merely huts that were just a little wider, leaving large worlds and the Void as the only stage where he could unleash his full power.
Indeed, the Void beyond Stellaris was one such perfect stage: the borderless World Barrier was an ink-green vast wasteland, the world sediments drawn to it being black mist that filled the land and distinctly separated from the white surge of the Great Mana Tide.
And in that stage of distinct hues, the silver Giant God of Steel was struggling to get up, his four arms raised to repel the crushing force of a falling world.