Thank you for your reply EGOL.
We are certainly not desperate for links, but I also don't want to pass up an opportunity if it presents itself. I wasn't sure exactly how Google used the original publish date to filter duplicate content across different websites.
However, your argument is more than just Google attributing the content to them - but the content's ability to build incoming links naturally. Good point.
Maybe I should just kindly ask that they link to our articles. It seems like I may be passing up on an opportunity this way. Any other ideas to build on this?