My Duplicate Content SPAM Test - What do you think?

I decided to see what would happen if I built a brand new site and filled it with complete garbage. It's still ongoing, but the goal is to separate fact from fiction.

Here's the gist:
* Bought a new domain early this month. Looks like it's an older domain that has changed IP address 7-8 times since 2008, but has no backlinks to it.
* I cloned this site 100% from another site I built just a few weeks ago - so all the content was the same - except it obviously has a different domain.
* The focus of the site is {niche + city} - all over the U.S.

.....then it was time to bury this sucker!

Next, I used a Wordpress plugin to build out a rather large site in just a few hours starting on 3/23. Note: I do have like 8 pages of unique content, but even so, those too are duplicate content from yet another website.

Posts: In each post, I embeded the exact same YT video. The only difference between each post is the Title {niche + city + state}. So, it's literally just a Title and a video on the page.

Pages: I embeded the exact same YT video again, but I also added the exact same content (750 words) on each page - with the only difference on each page being the Title {niche + city + state}.

Images: I uploaded just over 550 of the exact same images - again, all I did is spin the name of the image file {niche + city + state}, but I didn't embed the images on any specific page.

According to my WordPress dashboard, (see attached pic), I now have 4,682 Posts and 7,692 pages. But Webmaster tools says I've submitted 24,751 pages/posts and 9,162 have been indexed (see attached pic). Yes, I submitted my sitemaps and everything to big G.

My question is this: When I use site:mydomainname.com in Google, it only says "About 414 results".

Anybody wanna guess why the numbers are off from what Google says is indexed compared to what my Webmaster tools shows?

Sidenote: Btw, if any of you are wondering if any of this is ranking, the answer is yes. But as you might expect, the pages/posts that are ranking on the 1st page of G are incredibly low competition.