Well, his per-minute and per-game stats haven't really changed much since he left Dallas for New Jersey but I liked what I saw from Harris in the game.
More than just the stats. Back in Dallas, I didn't view Harris as a franchise point guard. He had the ability to attack the basket and he could guard the bigger guards and was quick enough to stay with the quicker point guards. But in Dallas, I never really saw him "take control of a game." I find it difficult to express in words what that really means but it's something beyond stats. Watching him in that Nets-Jazz game back then, he was basically orchestrating the tempo. He was pushing the ball up the floor and his teammates followed suit. He was changing the pace of the game to a fast-paced one where his team would thrive. The Nets offense seems more fluid in Harris' hands actually than in Kidd's earlier this season.
Kidd is no longer the player he once was. He's lost that foot speed to make up for that lack of a jumpshot and get to the rim. But he still has that uncanny ability to thread the needle. With the loss of foot speed, his defensive ability is shafted too. He's no longer quick enough to guard the younger, quicker point guards in the league today in my opinion. Kidd was a premier defensive player back then, I remember when he shut down Paul Pierce in the playoffs. Kidd is on a decline even though his stats don't show it.
On a side note, I've realized why Stromile Swift, for all his talent, does nothing in the NBA except fill up a few highlight reels. He is retarded. I remember that moment back in the Nets-Jazz game (how many times have I cited that game?), Swift tried to hit a lay-up from baseline and got whacked in the process. The refs didn't call a foul though but with the ball still live, Swift turns to the ref and complains. No player in their right mind would complain for a call with the ball in play.

He followed that up by landing one foot on the baseline after grabbing a defensive rebound.