Hamilton's performance has nothing to do Rielly's performance. He played ok hockey at WJC's, just like the rest of the the defenseman. Pretty underwhelming overall. I don't think Rielly was used correctly, but he also didn't prove himself enough to be a top pairing player in the tournament.
Hamilton was awful, as was Murphy.
edit: new thread coming.
http://hfboards.mandatory.com/showthread.php?t=1352703