I think that Muzzin is getting recognition that he deserves. He's damn great defenseman and one of the most underrated defenseman in the NHL, imo. He scored 40 points in 2 consecutive seasons, he's rock solid defensively, LHD, and did not refuse to join the WHC team.
Subban and Letang are better than him, but they are also RHD, and unfortunately for them, Canada is trying to build the team, not absolute all-star roster although I would prefer them to build the team from BPA because I don't really care about the results in this tournament. But I can see why they went with Muzzin, he fits to Canada's defensive structure and I can imagine that Babcock really wanted him on his roster.
I would prefer either Subban or Letang over Pietrangelo.
Both Letang and Subban are better than Pietrangelo and Weber. They could have had Doughty, Burns, Subban and Letang as their 4 RH d men. That would make too much sense though, apparently