Ottawa is easily disrupted by injuries to the top line, most teams are, but they were not impressive without their top scoring unit intact. If they played Montreal without Allfredson, over seven games, they are very vulnerable to an upset. Also, with a forty year old golie and Ray Emery as his replacement, one twisted ankle and they could become an average hockey club instantly.
Still, the stars would have to line up pretty straight for a doomsday scenario like this