The rest seems like it is correct, as seen in the post above, no? The forum software has imported the correct image and content, just not the proper title.
As for Facebook – I can’t control what they pull. I they’re pulling data other than the Twitter Card or the OpenGraph data then that is on them. Alloy supplies content for both of those formats on the full post view.
Check to make sure you have the Social features in RW turned off for your blog page, then republish all of your files using RapidWeaver’s Republish All Files feature. Then give it another go – Post the links here again after fixing it.
As you can see here the Foundry blog is importing the correct title, image and content, so I don’t believe it is Alloy itself. Here’s an example using one of Foundry’s blog post links: