Pretty good deal, but it's a shame people are throwing shade at Nurse (and Jones) to justify the deal as being a 'steal'.
Okay, lets do a comparison then (of last season); real statistics instead of a contract AAV.
Paryko is 28, Nurse is 26 (both birthday's next year)
Parayko has never banked more than 10 goals in a season, and had a career low last season with only 2 goals (on pace for 5 in an 82 season)
Nurse led the league last season in defenseman even strength goals with 15 goals (2nd overall with 16). Impressive considering he's not the primary quarterback of the #1 powerplay, only gets slotted in from time to time.
Paryako ranked 70th amongst defenseman in TOI at 21:20
Nurse ranked 4th amongst defenseman in TOI at 25:38
This stat is debatable, and can either be perceived as a detriment to the team, or an asset: Penalty Minutes
Parayko had 14 PIM, he's a clean player, that operates within the rules and doesn't give the other team powerplays very often. But someone posted his advanced stats for last season, and revealed he was an easy defender to gain chances on
Nurse ranked 4th in the league with 57 PIM. He plays with bite, purpose, with the mentality he's going to bend/break the rules in order to protect his own end. And although paired with Tyson Barrie most of the season, that pair wasn't easy to score on during the course of the season
Parayko's shot percentage was 3.3 % (120th amongst dmen with at least 30 games)
Nurse shot percentage was 10.4 % (6th amongst dmen with at least 30 games)
Nurse also towered Parayko in the +/- stat, but imo, that's stat is usually a direct result of the team's success. And although Edmonton finished only 9 points ahead of St.Louis, it's not a fair comparison unless the teams are evenly matched
Finally, Nurse finished in 7th for Norris trophy voting. The people who study this game, analyze it on a daily basis for a living, recognized that Darnell Nurse was Edmonton's best dman last season and one of the best in the NHL. I don't see him declining anytime soon. But I also see Parayko rebounding this season, but imo, not to the level/ceiling of Darnell Nurse
But in saying all this, I am a fan of Parayko, wanted him on my team like everyone else, but imo, Darnell Nurse is a better blue-liner that's on the incline. Not sure if Parayko is declining, or maybe as a product of the current team, or maybe just an off year in a year filled with adversity.