Zoom Events vs. Zoom Webinars

I have reviewed the "Zoom Events & Webinar" page that lists the differences between the two (i.e. Cloud recordings vs. Post-event recording library), but it is extremely vague.

For example, Zoom Events allegedly include both the Zoom Webinar option of "Detailed audience engagement reports" and the Zoom Event-exclusive option of "Event reporting, including registration, attendance, and ticket sales".

But I was wondering,

1) What the difference is--i.e. what is in the "detailed report" that isn't covered by "reporting, registration, attendance, ticket sales"?

2) What is the difference between a "Post-event recording library" and "Cloud recordings"?

3) What are event hubs?

4) Webinars are  "up to 30 hours each"--do events have similar restrictions?

If there is an explanation somewhere with more detailed information than the official pricing page, I would be much obliged.