What is better indexed?

Question

Search Engine Optimization

There is content published on one site as a PDF file and the same content published as an article on another site.
1. What content is better indexed?
2. If a PDF was first published and indexed by search engines, and then an article with the same content was posted on another site, is it likely that the article with the content will rank better in search engines?

Answer 1

1. Article
2. It already depends on many factors
There is no particular sense (for the site) that PDF will be high in the search results.

Answer 2

catch
https://www.seonews.ru/analytics/seo-dlya-pdf-opti...