Twitter card: summary vs summary_large_image

Question

I read these 2 doc pages: summary and summary-card-with-large-image, but I don't really see the difference.

Example:

<meta name="twitter:card" content="summary" />   <!-- or summary_large_image -->
<meta name="twitter:title" content="Small Island Developing States Photo Submission" />
<meta name="twitter:image" content="https://farm6.staticflickr.com/5510/14338202952_93595258ff_z.jpg" />

What is the actual difference betwen both at the end? The rendering looks identical:

Answer 1

You're quite right and I'll make a note to update these documentation pages. A summary card usually has a small image on the left of the text in the timeline - this variance in the docs may be the result of using embedded Tweets. Both examples in the documentation show what I'd expect a summary card with large image to render as.

Answer 2

As suggested by @AndyPiper, this is probably a documentation problem. Here is the result of a content="summary", screenshot from Twitter in Chrome browser (desktop):