If you gave Lemieux perfect health - there's a small chance he would win every single Art Ross trophy from 1988 on. He's so talented, he wouldn't even need to play at his best ~82 games to win...if he plays at ~80-85% of his best it's enough to win almost every year - gives a lot of room for margin and inconsistencies, while still winning a Ross.
1988 & 1989 - already won
1990, 1991, 1994, 1995 - If he had perfect health, he'd win the Ross every year.
1992, 1996, 1997 - already won
That's 9 Art Rosses.
As for 1998, 99, 2000, 2001 & 2002....hard to say how much ageing Lemieux does vs Peak Jagr. Could he beat him out every year? Some years?
I'd say at the least - if we change nothing to Jagr - Lemieux can probably beat Jagr out in 1998 (lower total) and 2000 (63 games).
1999 & 2001 are up for debate who wins. Let's give those to Jagr.
2002 - Lemieux definitely has it in him to beat out Iginla and 96 points. He might be 36 then, but if he was healthy he'd still win it in a lowering scoring year for forwards.
So total for Lemieux = 12 Art Ross....but could be even higher.
Gretzky goes down to 8 Art Rosses (loses out 90, 91 & 94).
As for peak numbers for Lemieux in a season:
- He's not touching 163 assists, obviouslly. He might flirt with ~110-120 assists a few more times though.
- He'd have a good shot to make a run at 92 goals. In 1992-1993 is the obvious choice, but possibly in surrounding years too. He'd similarly have a good shot to make a run at 215 points, also either in 1992-1993 or in surrounding years. Whether he surpasses 92 goals or 215 points is 50/50 I'd say.
Where it gets really interresting is playoffs. The 90s had some incredibly deep teams who won cups. Rangers, Devils, Stars, Colorado, Detroit....does Lemieux being healthy and playing throughout the 90s change anything? It's possible - but much harder to pinpoint. Maybe he and Jagr bring an extra cup or two, maybe none...who knows. Lemieux would almost for sure have a lot more playoff games and points though.
All-time playoff point leaders:
Gretzky 382
Messier 295
Kurri 233
Lemieux today....172 points in 107 games. To me he'd 100% be above Kurri - and possibly above Messier (really depends on games played). But he definitely wouldn't touch Gretzky here.
In this scenario does Lemieux surpass Gretzky all-time? It's a 1A/1B situation. Gretzky remains the better playoff performer - and likely has more career points/assists. Lemieux is close on career points - and above 1000 career goals.