Except for goals per game which is uniquely relevant. On one hand you argue he is better than everyone else in every category but then when it is noted he was not a better goal scorer than Mario, you say well that is a different argument. Which is it?
How is it that games played was relevant when discussing Howe but not relevant when discussing Mario? Gretzky was not a better goal scorer than Mario. The stats don't actually say that once you adjust for games played like you did with Howe, and Gretzky himself denies it.
I don't know how else to explain this to you. I'll try one last time:
Gretzky's best attribute was his goal scoring. Does that mean he's the best goal scorer to ever play the game? No, because again, that's a separate argument.
What makes Gretzky's best attribute his goal scoring are the following reasons: he holds the most goals ever scored -- in both the regular season and the playoffs, and professionally. He scored 92 goals in a single season and 50 goals in 39 games -- no one will ever break the former and most likely the latter.
You want to pretend since Gretzky wasn't "the" greatest goal scorer to ever play the game, that the automatically proves goal-scoring wasn't his best attribute. It's a comically weak argument. Just because Mario was the best goal-scorer to ever play the game, that doesn't mean that Gretzky's best attribute wasn't goal-scoring, or that he himself wasn't one of the best goal-scorers of the game. I can't believe I have to explain this to you.
Anyways, have fun with the last word.