Rise seems to have a more obvious but at the same time more flexible structure: there are subtopics/subsections and it is easy to navigate between them. Storyline takes students from task to task in a linear way. In terms of layout, I agree with Jemima: rise is vertical and Storyline is horizontal.
Content-wise, Rise suits better for presenting more information either in text form or video, Storyline is more suitable for interactive activities with immediate feedback. I like Paula’s idea that Rise is like a coursebook while Storyline is more of a workbook,