I start FF players against the Packers, but I won't root for them. It's win-win either way. If they do well: win for FF. If they get shut down: win for Pack.
As far as the Falcons are concerned, I think Matt Ryan is overrated. They were on TV here a few weeks ago (don't remember who they were playing, Baltimore, maybe...) and the announcers were all over his balls about what a great game he was playing and how cool and accurate he'd been, but he looked like crap to me in that game - he made some good passes, but he also threw over, under and behind a lot of receivers, too. I really wasn't impressed at all.
Our offense > their defense
Our defense > their offense
Packers 34, Falcons 27