kind of like macinnis, yzerman had a stretch of lost years in the 90s. it seems weird to say because he scored more than 135 points in one of those years, but he was dropping out of the conversation for the best top forwards in the game, maybe even top ten. (similarly, macinnis had a stretch where he was still putting up phenomenal numbers, and was still a post-season all-star candidate, but had been passed by stevens, leetch, and certainly chelios).
as we know, both players had fantastic first thirds of their careers and made up serious ground for their all-time standing in their respective last thirds. but they were considered the best players and the leaders of their teams for that middle third, and both were very good teams that underperformed annually in the playoffs. that really coloured their regular season achievements, which while good also didn't approach yzerman's late 80s peak and macinnis' late 80s/early 90s peak. it was almost like, "oh yeah i forgot about yzerman/macinnis. i guess he probably scored his 100/70 points and was otherwise irrelevant in the grand scheme of things."
to answer the question, yes i'd take gilmour in that time frame. less points but more results and certainly a better defensive player (at the time), more dependable crunch time player, and more effective leader. i always considered sundin a toronto media product, but gilmour was the real deal.
perception-wise, when the new generation (fedorov, jagr, bure, lindros, roenick, selanne) came in, yzerman kept on doing what he was doing only he was no longer automatically considered the fourth best forward in the game after gretzky, lemieux, and messier, and got kind of lost in the shuffle-- and it wasn't just the young guys, he was also passed by hull and challenged by oates as early as 1990 and certainly by '91, and then you add lafontaine and gilmour to that list of top five contenders shortly after. gilmour on the other hand stepped up his game at precisely the time the young guys threatened to take over the league and kept his name in the papers.