Importance of High PR sub pages?

Please read image and provide insight. I goofed on the image, ignore the types of backlinking that are repeated from the first list.

I tried creating a post but your system is a pain in the ****. I keep getting that stupid message and unable to post. I had to make a freaking image to ask a simple question. You can be sure I won't become a member with harassment like this when im following the rules! If you made it easier to post, I would be more active and would come to the forums on a weekly basis like I do with other forums and even consider supporting the community with a paid membership. Perhaps it's time to re-think your strategy?

Must agree on the restrictions for new members, is a tad annoying trying to post and being told you have broken a rule but have no idea which one.

The idea is simple, you want your link on a page that has a high pr as possible.

Now things get interesting when you have the option of a domain pr of 5 and a link of a page with pr 0 compared against another site with domain pr of 3 and page pr 2 on which to drop your link of. Not sure which would be best so go for both lol

You can use LSI keywords in you high page rank sub-pages with link to your home page.

Someone is telling me that #1 is equal to #2

#1 - The root domain has a pr of 6 but the page which contains the backlink has a pr of 0.
#2 - The root domain has a pr of 5 but the page which contains the backlink has a pr of 2.

Isn't #2 better than #1? I mean #1 though on a domain which has a high pr rank, the page where the backlink is does not so the high pr of the domain passes some of the pr down but it is not much.

Am I mistaken?