Girard is the only one I ll give and that was my homer pick, but I concede he isnt putting up the offensive numbers to compete for a top D title yet...
Esepcially Karlsson who is mostly rated on his offensive output. Every one of those guys is playing better than him right now. Take off the Senators years blinder glasses and look at it logically.
Pietreangelo (Easy yes)
Barrie (13th in the league in D scoring while playing 5 less games)
Girard (concede)
Subban (possible)
Josi (Easy yes)
Burns (Same team playing better and cant see it? Really?!)
Letang (Playing incredible no a pretty bad top heavy Pens team)
Rielly (Top D scorer in the league currently)
Chabot (2nd in D scoring)
Giordano (Arguably would get the Norris if it was voted on today)
Yandle (6th i nthe league in scoring)
Hedman (Best D in the world currently)
OEL (Put him on a decent team and he'd be a Norris candidate every year)
Jones (why facepalm?)
Carlson (3rd in the league is scoring)
Doughty (Still amazing even though his team is a joke)
Outside of Karlssons past, there is no argument for him over any of these guys, especially when he touted as an highly offensive defenseman! Are we rating him based on his defense now? for the first time in his career?