Keep in mind that any career average stat is going to be biased in favour of players who either retired young, or are in/just past their primes.
For example, adjusted points per game tells you that Joe Sakic is a better scorer than Jaromir Jagr, which makes no sense. (VsX per game tells you that they're even - and that conclusion is also falls).
The reason (in this case) is because Sakic played just 59 games (4% of his career total) after turning 37. Jagr played 460 (27%). Comparing their averages is misleading, because you're really comparing Sakic (basically from age 19 to 38) to Jagr (basically from age 18 to 44, with a few years skipped in the middle). Of course Sakic's going to look better - he retired before his level of play decreased. It doesn't make sense for Jagr's legacy to be diminished because he played well into his mid forties (leading a division winner in scoring at age 43!) - but not as well as he did when he was 25.
Points per game is fine if you want to estimate ability (rather than pure production). But it has to be based on comparable ages, or else the result is meaningless. Below is VsX, points per game, based on seven years. (There's nothing magic about seven - easy to calculate over another set of years). But I think this is a better approximation of the best per-game scorers in NHL history:
Players | Seven years |
Wayne Gretzky | 1.565 |
Mario Lemieux | 1.39 |
Phil Esposito | 1.312 |
Gordie Howe | 1.219 |
Bobby Orr | 1.215 |
Guy Lafleur | 1.103 |
Jaromir Jagr | 1.087 |
Sidney Crosby | 1.087 |
Bobby Hull | 1.076 |
Stan Mikita | 1.067 |
Jean Beliveau | 1.056 |
Ted Lindsay | 1.047 |
Marcel Dionne | 1.044 |
Syl Apps Sr | 1.029 |
Bill Cowley | 1.024 |
Bernie Geoffrion | 1.012 |
Maurice Richard | 1.006 |
Evgeni Malkin | 1.004 |
Charlie Conacher | 1 |
Howie Morenz | 0.992 |
Mike Bossy | 0.971 |
Alex Ovechkin | 0.97 |
Andy Bathgate | 0.963 |
Bryan Trottier | 0.962 |
Eric Lindros | 0.958 |
Joe Thornton | 0.945 |
Steve Yzerman | 0.942 |
Joe Sakic | 0.94 |
Busher Jackson | 0.933 |
Elmer Lach | 0.929 |
Jari Kurri | 0.929 |
Peter Forsberg | 0.927 |
Paul Coffey | 0.926 |
Bill Cook | 0.923 |
Jean Ratelle | 0.922 |
Max Bentley | 0.921 |
Peter Stastny | 0.92 |
Patrick Kane | 0.918 |
Sweeney Schriner | 0.917 |
Frank Boucher | 0.911 |
Bobby Clarke | 0.907 |
Doug Bentley | 0.906 |
Norm Ullman | 0.906 |
Frank Mahovlich | 0.905 |
Mark Messier | 0.904 |
Teemu Selanne | 0.901 |
Gordie Drillon | 0.898 |
John Bucyk | 0.895 |
Nels Stewart | 0.891 |
Martin St. Louis | 0.889 |
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