I have been told that running content on RSS is good for SEO

I have been talking with my development team and we were talking about the marketing of a project and SEO and talked out a few things. One item i did not understand too well was the RSS feed on the site and how i wanted it removed as i did not see the point. But later i was told that RSS feed on your site content is just as good as a sitemap for the google bots. this was news to be as i never really looked into RSS feeds apart from news feeds.

So i was wondering if anyone had any more data to add to this i would love to know as i mite just rss the rest of my sites to make a easy index for google.

RSS tech designed for creating and maintaining client base.
XML-sitemap is good for advising GoogleBot about priority indexing in first place.
For me they are not connected at all.