I think it is a variety of factors. For starters, that's 10 years under Savard's belt of being a high octane offensive guy. That's a lot of miles, and he was the go-to guy on the Hawks all of those years. Larmer was there too, but this was Savard's team for sure. And other than a still impressive rookie season, he either had well over 100 points or was on pace to have over 100 points in a full season for 9 straight years after that. Only Gretzky and Stastny scored more points in the 1980s if I recall. There can be a time when a player starts slowing down and burning out. Savard wasn't big, maybe that factored in a bit. He was chippy out there at times and certainly could take a beating. He was no wimp, but it does weigh you down. It did with Bryan Trottier, so it will with Savard too. So there's that.
Also, he was poorly used by Pat Burns. The teams Burns coached were always defense-first. This is part of the criticism I have always had of him because he did tend to wear out his welcome eventually. The Habs won the Cup immediately after he left Montreal and he inherited a player who just came off an 80 point-60 game season. Watch some goals Savard scored as a Hab, he still had that magic. He could still do his classic spinoramas quite well. I just don't think he went to the sort of team that used his talents the best. And combine that with him being older and such and I think you can see the drop in numbers. He did well in the playoffs in 1991 and 1992. By 1993 he was hurt in the postseason but still assisted on an overtime goal. He finally won his Cup, so I guess the trade wasn't all that bad. I've always loved Guy Carbonneau bringing Savard - decked in a suit and a tie because he was hurt - to hoist the Cup first. That was classy. Savard was always pretty good in the postseason, so he was one of those guys you were happy to see win. But yeah, the stubborn system of the Habs at that time was a poor fit for him.