I think that Niederreiter is pretty close to Parise. He's still pretty young. He'll turn 25 soon, so he's in his prime. My bet is that he will continue to improve this year and crack 60 points. He only got a bit over 15 mins per game last year. If he gets more minutes, he could go to the high 60s. I dont think he is a 70 point player, but its not inconceivable to get low 70s if all things go his way this year.
I'm not even convinced that Parise will be the better player next year. Parise misses a lot of games.