Miller is a better defender than Bo ever was.
He gets pissy and hotdogs on the backcheck sometimes. That definitely isn't ok, but that's hardly the whole story of a center's defensive responsibilities.
Miller is pretty good at zone coverage. He reads the play well, gets into lanes. He supports his D down low in the defensive zone. He looks like a normal center out there.
Bo Horvat is a trainwreck who outright refuses to perform even the most basic defensive responsibilities of his position. He refuses to support his D down low, and instead hovers up around the blue line looking for a breakout. Oftentimes he will blow the zone, and Bo will be standing out in the neutral zone all by himself when the puck is in the back of our net. He just straight up refused to play like a center and support his D. Didnt wanna do it.
He is also not very bright and could never figure out positioning in the defensive zone. I've watched with my own eyes Bo Horvat dashing from the high slot out to the point in a straight line chasing a puck that the opposing defenseman had. That sounds bad right? Why is the center dashing out to the point like that?
Oh. But wait. It gets worse. Pearson was already covering that defenseman. One of our wingers was already there covering the play. Bo didn't care. He had dreams. He literally charged in a straight line, pushed Pearson out of the way, created a huge gaping hole which caused a line breakdown an a scoring chance against.
Pearson during the play stopped, turned around and looked at Bo, then literally threw his hands up in the air as if to say "WTF DUDE?"
That is Bo Horvat. Blows the zone. Refuses to perform the most basic defensive responsibilities of his position by supporting his D down low. And terrible zone coverage on a nightly basis, leading to huge gaps opening up and defensive breakdowns. Bo Horvat was singularly responsible for defensive breakdowns on a near shift by shift basis, he was that bad.
Miller isn't Fedorov, but he sure as heck is miles better than Bo Horvat.
To be frank with you, I just can't take any Canucks fan seriously who says Bo Horvat has a good 2 way game. It just entirely discredits everything you say. It's an opinion a person can have only if 1) They dont watch hockey, or 2) They dont understand hockey.