So, super recency bias is probably the problem here.
At the same age vs. MacKinnon:
- MacKinnon = 791gp, 899pts, 1.14ppg
- Crosby = 70gp, 933pts, 1.33ppg
At the same age vs. Kucherov:
- Kucherov = 725gp, 873pts, 1.20ppg
- Crosby = 864gp, 1,116pts, 1.29ppg
So, even with all his injury trouble that hit when he was just starting to dominate the league, he still has more raw points than both at this points in their respective careers and Crosby did that during a much lower scoring era.
Also, looking at where they finish in the scoring in terms of raw points and PPG:
Points:
- Number 1 - Crosby (2), Mack (0), Kuch (2)
- Top 2 - Crosby (3), Mack (1), Kuch (2)
- Top 3 - Crosby (8), Mack (3), Kuch (4)
- Top 4 - Crosby (9), Mack (3), Kuch (4)
- Top 6 - Crosby (10), Mack (4), Kuch (5)
PPG:
- Number 1 - Crosby (6), Mack (0), Kuch (2)
- Top 2 - Crosby (8), Mack (1), Kuch (3)
- Top 3 - Crosby (9), Mack (3), Kuch (3)
- Top 5 - Crosby (11), Mack (5), Kuch (6)
- Top 6 - Crosby (12), Mack (6), Kuch (6)
This is just on offensive production as well....I think most would separate Crosby from these two for various other reasons.