That's strange, seems like your contacts displayed are the opposite of what you selected.
All I know is, when I had my DX I had some saved on Backup Asst and some on Google, before I realized the difference. I eventually switched to Google only, so I exported my Backup asst contacts to Google, which did result in some duplicates. I went into my Google contacts (on the computer, easier interface for merging and cleanup) and merged them all, some auto, some manual. It was a good opportunity for some sorely needed housekeeping anyways. I'm still not super organized, just divided my Google contacts into two groups- My contacts, which syncs with the phone by default, and Other contacts, which does not sync.
Not sure what your problem is though, why your Facebook and Twitter are showing up even though you've selected just phone and Google...