I dunno if he would, sure the leash loosened on the Blues as compared to the dynasty Isles, as well as shooting more being the primary goal scorer would likely net him a few more goals, but beyond the stats, Hull seems to have scored in more variegated ways than Bossy in his three year zenith.
Hull was just a better skater, and more powerful to boot, he could go through players like Bossy couldn't. And while Bossy was as fearless as Hull about staying in front of the net and taking the punishment that came with it, Hull was just better built to take it (I'd also say there was more punishment to give when Hull was doing Hull things).
And who knows how Hull develops on the dynasty Isles? Probably develops his defensive game earlier than rather than waiting for him to fall off the hill a bit in 1992-1993. Almost certainly racks up more assists due to the players around him finishing better.
I dunno, Hull's a good passer, sure, but not in the same league as Bossy. Which is another great reason why Bossy didn't have to hit some benchmark of 80 goals in a season to prove anything, he can pass as much as he scores. He's on another tier as a player because of that. I feel the same way about Guy Lafleur being a great goalscorer who I think gets overlooked in that department (when talking about the greatest), because he passed a lot too.
We had a similar discussion about Pat Lafontaine not too long ago, where you didn't think that he had good players around him, which I can understand your point. There is a bit of overlap though, in who those teammates were (with Bossy in mind), post Islanders-dynasty, and who Lafontaine was playing with into the late '80s.
I don't think Bossy had a bunch of great finishers to play with, specifically when Trottier was no longer the same guy that he was in the late '70s/early '80s. Bossy's still getting 60 assists with guys I wouldn't necessary think are great finishers.
I like Brent Sutter and John Tonelli, but they definitely had their best year playing with Mike Bossy, both hitting the 40 goal mark for the only time in their careers (and the 100 point mark).
The Islanders depth - beyond their Big-3 - was very good, because their lower line players played their assigned roles very well. I also think there's a significant great drop off from the 1st line, to the 2nd, nothing comparable to what the '80s Oilers were like, or the early '90s Penguins teams were. And the '70s Habs were just so deep and balanced in all areas, more than any team that I can think of.
If you swap out Bossy for Mike Gartner, I'm not sure that the Islanders are near the top of the league in Goals For all of those years.
I like Hull btw. I don't disagree with most of what you're saying about him. I was a fan of his too. Bossy was a better skater than I think people realize. He could score in just as many ways as Hull could. They're about as similar in that department, as any two players I can think of with a comparable skill.