I don't think that Saban said that he was copying NE...but it is writers who say that he's doing that...he's similar to Bellichick, but I think he follows his own drum.
This is unlike Wanny, who was obsessed in copying Baltimore in that he wanted all defense and sorry offense as a means to winning the Super Bowl. He did that while ignoring the fact that (1) our D wasn't as good as Baltimore's and (2) what Baltimore did was a rare feat. Most SB winning teams have an offense that can put up some points (yes they also have good D's).
Case in point is that Saban is showing that he's creative and disciplined while Wanny stuck to his unproductive plan for too long and had a bad habit of panicking in game situations and with personnel moves (over reaching, over paying, etc).