The difference in that longevity being that Hasek's five-year prime makes up 41.1% of his total career, whereas Roy's five-year prime makes up just 26.9% of his. So with this being an averaging statistic, Hasek's career number is better protected.
There's a pretty good chance that they'll be two of the four goalies to make the Top-Four, so there's a very good reason to discuss them now instead of waiting to discuss them next week.
I don't feel as though it is the sort of thing that needs a defined percentage of weight. I'm not going to say, "Oh, John Vanbiesbrouck in 1994? Let me deduct X amount from your season." But I'm also not going to say, "Billy Smith? Now there's a guy who barely registered anything of value in the regular season (one 1st Team All-Star selection and one 5th Place selection with less than two-percent of the voting share). He shouldn't be considered a top goalie."
The whole point of the NHL season is what comes
after the NHL season: The Stanley Cup Playoffs. If you can deliver there, sometimes that's
all that matters. If you can't deliver there, sometimes that's
all that matters.
Ken Dryden, 1971
Grant Fuhr, 1984
Patrick Roy, 1986
Martin Brodeur, 1995
Jean-Sebastien Giguere, 2003
Between the five of them, they couldn't buy a 1st or 2nd place All-Star vote. Only Giguere made it onto an All-Star ballot at all.
Roman Cechmanek, 2001; .921 (4th)
Roman Cechmanek, 2002; .921 (3rd)
Roman Cechmanek, 2003; .925 (3rd)
And there's a reason he was traded for a second-round draft pick.
Not everything is going to be a boiled down to a number. We're not going to be able to look at a scoreboard a la
The Hockey Compendium and award Curtis Joseph 968 points for his regular season and 1000 points for his playoffs in 1993 (which is the best playoff since Vachon in 1969 according to Klein and Reif...
I can't believe how much I paid for this book).
Short Answer: I don't know how to math this.