If a player has almost 100 more goals than the next highest in a 4 year span, I think from a talent evaluation standpoint that player can pretty comfortably be considered the best.
That fair enough of course, but this message board went in great length explaining the rational.
To make maybe a stupid argument from 2014 to 2017 in the khl.
Mozyakin scored 141 goals in 220 games, .64 gpg
Kovalchuck scored 89 goals in 209 games, .43 gpg
kovalchuck was 1-2 year younger, would that close the debate for who was the better goal scorer and we are certain Mozyakin would have scored more than 500 goals in the nhl if he went to the blue jackets instead of staying in Russia, after all he was significantly better than a HOF caliber talent in Kovalchuck that scored 440 despite taking long breaks.
I think we could find a list of case of player outscoring another one and shifting place when they change league, AHL-NHL, junior-NHL, KHL-NHL, etc...
That while in this specific case, someone outscored another, it is still possible in some other way hockey is played it would be the reverse, it is not like 100-meter sprint, where someone faster is just faster than the others.
Gretzky case over Bossy is great, but if you look at playoff.
Gretzky 84-88 cup winning era he scored at a .63 goal per games in his high scoring youth 81-85, it was .81 goal per games.
79-83 cup winning Bossy era he scored at a .82 goal per games, 79-83 it was .73.
It already look less crazy of a statement, when you compare Bossy vs Gretzky against top half defense in the league and minute played, look less crazy.
Peak Gretzky was certainly better at scoring more goals in a season, Bossy has no argument there.
If someone is more talking need a goal against a great team defense, 3rd period, everyone is doing their maximum effort, you still take Gretzky because he make more likely for a goal to happen obviously, but in term of being the one scoring it, Isles fans saying give Bossy is not necessarily crazy.
1981 Canada cup, Bossy 8 goals, Gretzky 5 goals, 1984 Canada cup both scored 5 goals. At least that how I see people making those arguments, Gretzky endurance, drives, complete tool kit, made it so he would outscore a peak Bossy over a season, in a playoff run, less obvious.