The Heat also had phenomenal goaltending to start the year. Brust and Taylor were unstoppable before the whole goaltending injury/callup/rotation threw them off, then they didn't stay in as many games.
I certainly believe there are a few very under rated prospects on the farm for sure.
Although not having been actively keeping up lately I feel I'd be foolish naming the ones I do think are under rated.
I will say though I've always had very high aspirations for Markus Granlund and I think he flies under the radar too much on his size and skating. You cannot teach the shot and knack/nose for the net he has. He will be a legitimate points getting for the Flames in the near future.