The Rangers are clearly the better team now and I don't see the Devils passing them anytime soon. The question is which team is better poised to be a Cup contender in the next few years? I like the path that the Devils are on now with Fitzgerald - I'll like it even more if they can trade away a few more pending UFA's in the next few days. Tough to think about where they might've been if Shero didn't make the Grabner, Subban or Gusev trades (the last of which was the only one I was in favor of), but here we are.
If I were a Rangers fan, I'd also be extremely happy with their moves the past few years. They would appear to be playoff contenders as early as next season and being in a winning environment may be better long-term for their younger players. They will have some decisions to make though in a few years on how the handle the older players and the cap, but it's a minor concern at this point.
Hopefully Fitz sticks to the rebuild and doesn't try any shortcuts like Shero did. Personally, I like the Devils situation better but I'm biased. I think the lack of any potential "bad" contracts is an advantage, though who knows if/when the Trouba, Kreider or Panarin contracts will come back to haunt the Rangers.