I don't think I'm qualified to answer that. But I'll give my opinion.
I think Eades is a very acceptable candidate, and of the 2 I would have been happy with either Johnson or Eades, and that's only because I knew of them. I'm sure some of the other candidates would have been excellent choices too, I just don't know anything about them, so that limited my opinion.
Eades has been a UND assistant previously. I like ties to the UND program. He's also a forward, and played at a high level. He was a "character" guy on teams he played on, played some pro hockey, and has had a successful coaching career at the level he's been at.
For me, those are good qualifications for an assistant coach. Blais didn't have much better coming in as a head coach.
Is Johnson even more qualified? I suppose that is possible. I'm just saying that I think Eades is strong enough.