When rendered as an image, they don't differ; you'd have to inline the SVG DOM in your HTML to make a difference. And yes, then you can have screen readers reading the text, ARIA attributes to better describe certain parts, etc.
That being said, SVG is likely still a better option than PNG for its scalability alone. At least for this kind of content.
That being said, SVG is likely still a better option than PNG for its scalability alone. At least for this kind of content.