I wanna say I'm surprised by the results, but the Leafs are such a meme that I'm really not.
Rookie Ovechkin scored 52 goals and 106 points. That was also during the cartoon 2005-06 season where they actually enforced interference. Teams averaged 5.85 powerplays per game. He had 52 points on the powerplay.
Auston Matthews' best season was 69 goals (f***in nice) and 107 points, with only 29 points coming on the powerplay.
I value even strength scoring more, especially in a league with 12 minors per game versus a league with 6 minors per game. Anything that happened in 2005-06 has to be taken with a brick of salt. It had twice as many powerplays as a normal NHL.
And even putting that aside, Matthews still literally had more points and 17 more goals.
It's Ovechkin for prime, peak, and career, but the answer to this poll is Matthews.