The overwhelming majority of papers put on arXiv and nowhere else are:

[ ] comparable to Perelman's proof of the Poincare conjecture

[ ] not comparable to Perelman's proof of the Poincare conjecture?

Let's reword that: the overwhelming majority of papers published in peer-reviewed journals are comparable/not comparable to Perelman's proof?

Probable answer: not remotely comparable. In fact, a lot of them are just plain wrong.