Nomar had a plus arm. I agree.
We will have to agree to disagree on the plant vs an extra step to twirl and throw while running.
I will say that I used to tape all the games, and I went through this argument many times with Sox fans who felt like Nomar was a great defensive SS. More often than not, after showing them the replays, they agreed that the extra step was not needed and that others made the same plays by planting and throwing. Sometimes, he took a quick mini step after gloving the ball, where his foot would come even to his other foot, then he'd take another step before twirling and throwing while on the run or turning in the air in a jump.
Other SSs sometime take that quick mini step to get the footing right, so their plant foot is set up for the throw, but to me and many others who watched the replays with me, Nomar took the extra twirling step at the same point where other SSs simply planted and threw.
I will say Nomar was better than Jeter, defensively, and I was surprised that ARod agreed to move to 3B for Jeter but not for Nomar when the initial trade was announced with the Red Sox.
The 2002-2004 Nomar was not the same as '97-'00 or '01. He had lost a step, and pretty much any observant fan could see it. Maybe ARod saw the same things I did.