If you look at Manny and Roloson, they did pretty well considering they played on teams that chronically were some of the worst offensive clubs in the organization's history. Yes, they also benefited from Lemaire's defensive style of hockey, but I still think their goaltending held up pretty well. When Dubnyk first arrived, he was much better but its been a steady decline ever since that first season when his numbers were among the league's best. And even a slip in Dubnyk's game usually was a big part of the team going on a losing streak.
I still think the most interesting fact is how close those big sample numbers are when you look at save percentage or win percentage. It kind of proves the team has been stuck at a certain level of above average-ness for an extended period of time.
I didn't have this in the article, but Harding also was a rare right-catching goaltender. He had a few solid seasons in Houston before he really got any significant chance to show what he could do in Minnesota.