All the first I want to say is, Entries by a Prop or an eVar can be more than the Page Entries.
Consider this scenario, a visitor has loaded a page where Page Name is 'Home' and Site Section is 'Business' in a Page View Call. Entries will be captured for both Page and Site Section. He didn't do any activity for 30 minutes and thus the visit will expire. Now, if he clicks on the Home Page Banner where all the variables including Site Section (Here, Business) are passed, but this time it is a Non-Page View Call. Now, 'Business' will get one entry but the page won't because you cannot set Page Name in the Non-Page View Call.
We already know, 'Entries' or 'Entry Page' is not based on the first Server Call but based on the first-dimensional item. Here page didn't capture after the session expiration and thus entry will not be attributed.
That's the reason when you break down by Page Name (eVar14), the value is there because we can set the eVar in a Non-Page View Call.
So, the conclusion here is, the scenario is because of Custom Links i.e. Non-Page View Calls.
If you still need to understand about entries attribution with examples, here you go with some of my blog links.