I'll disagree that it's just Minnesota and Wisconsin that have separated themselves; BC is up there, too. After that, you have your choice between teams like Bemidji that seem to have a ceiling that leaves them incapable of beating the top teams unless those teams have a bad night, and teams like Clarkson and North Dakota that have a higher ceiling, but also have a tendency to completely take a night off and lose to or tie teams that they have no business losing to. Maybe Northeastern will be the team to bridge that gap; we'll get to see how they do against BC next week. Maybe Harvard will put it together. But right now, there just isn't a team that has really put itself forward to really claim #4.