Visualforce has a built-in feature to render a page as a PDF by using the renderAs attribute. This feature allows the developer to create PDF documents from Visualforce pages without using any third-party applications or libraries. Lightning components do not have this feature, and would require the use of external services or libraries to generate PDF documents from the component. Therefore, if the screen needs to be rendered as a PDF without using a third-party application, the developer should choose Visualforce over Lightning. Reference: [Rendering a Page as a PDF], [Creating PDFs with Lightning Components]