I think he would be about the same. The game was more wide open in his prime, but he was not the type of player who would shy away from contact or need a lot of room to do his thing. His numbers would be diminished in the clutch and grab era, and nowadays I think he would be just as effective as he was back then.
More importantly, would he recover from the injury better? Better diagnostics, surgery...sports medicine has advanced a lot in the last 15-20 years. He might have been able to come back faster, and just as good as new almost.
The Super-Langs comment is interesting, and I like it...but it does come up a bit short. I think JohnnyMac's shot puts him in an entirely different category than Langs could ever be in. He was also better at finding seams in the defense to get open than Jamie ever has been. Jamie's a little more chippy and agressive than in-his-prime JohnnyMac too. That said, I can't think of a better parallel to give.
I voted the same. His skillset does not require run-and-gun hockey to survive. He was a corner guy, great in front with a wicked shot he could release from anywhere. Plus he was pretty intense and tough to stop. He would fit this Devils team quite well.