Syncing books between devices

So, I have searched a lot on this and iBooks still won't sync my PDF and ePub files I loaded into iBook on my phone to my iPad.

I know many people say it doesn't work, but it says on the Apple site that is should.

Of course, I can just connect to my iPad to my computer and sync the files in with iTunes, but I am determined to get this to work in light of the following quote from Apples website.

"Using Sync Collections with PDFs in iBooks

If you have Sync Collections set to ON, iBooks will keep your PDFs (and non-iBookstore books) in the same collections across all your iOS devices. For example, if you move a PDF to your Sci-Fi collection in iBooks on your iPhone, and then open up iBooks on your iPad, a copy of the PDF will appear in your Sci-Fi collection.

If you delete a PDF (or non-iBookstore book) while you have Sync Collections enabled, it only affects the copy on the device. For example, if you delete the copy of the PDF from your iPad, it will still be present on your iPhone."

I have created collections and put files into them, but it hasn't downloaded them. I am thinking that Apple just used ambiguous language to make it sound like it will download the file, when what I think it really means is that the file has to already be on both devices and if you move it to a collection, then it will move that file to the same collection on all your devices.

Does anyone else have much experience with this?