Well created, trustworthy and well-structured content impacts the user experience, so if you concentrate on content, you also concentrate on user experience. As well as technical factors such as page speed, Google will assess the overall user experience by tracking user signals, Bounce-Rates, Time on Site, the number of pages visited etc.
For example by helping a client from the health industry optimise one piece of content by including more facts and improving the structure, we saw the Bounce Rate drop from 45% to 18% while Time on Site went up from 1 min to 2.9 minutes (because we made the content more interesting and relevant).  These are also KPIs Google looks at when it comes to user experience.
But the importance of user experience does not mean that pages or content will become similar. Google recognises that what constitutes a good user experience varies according to niche or the search query.
For example too many images can sometimes make pages load slower which generally has a negative impact on the user experience and search performance. However, in our latest Google ranking factors study, we see that Google accepts that queries for an ecommerce niche such as ‘furniture’ are best satisfied by giving searchers the opportunity to view a large selection of relevant images, even if this could result in slower page-load times. In fact the top ten results for furniture-related searches averaged nearly 28 images per page − the highest of all the niches we analysed. By contrast, searches for finance-related topics had the fewest on-page images because text is more important here.