His stats are as you showed, 1,274 games, 780 goals over 17 seasons....that's an average of 45.9 goals per season. Your 50.2 goals wasn't made up, it was per 82 games, but suggesting that is the average per season is made up pace.....which is what a lot of people lose their minds over when talking about other players.
OV's career pace per 82 games is 49 goals and 89pts. Kucherov's is 36 goals and 99pts. That's kind of an irrelevant comparison for probably several reasons, but the main 2 being 1) Kucherov is halfway through his career and OV is near the end....Kucherov's 82 game pace is likely going to come down and 2) I haven't checked, but guessing Kucherov, on average, played in higher scoring years.....I do discount that argument a bit though.
Anyway, highly unlikely Kucherov will ever been seen as the best Russian player ever.