I am not sure how many times you need to be told, Crosby created depth on his championship teams by being able to play effectively with any level of linemates that help execute their team strategy.
Also, McDavid and Draisaitl play a lot at ES in the playoffs when both are healthy including this season.
Also, in 2022, in 16 games, Evander Kane scored 13 goals, Hyman 11 goals. In 2009, in 24 games, Max Talbot scored 8 goals and a 38 year old Bill Guerin scored 7.
Also, McDrai combined on 22 of McDavid's 33 points. Malkin and Crosby combined on 12 of Crosby's points.
Also, the Pens #1 d-man, Gonchar, was injured in 2009 in the 2nd round and missed their entire playoffs in 2017 (Letang).
If injuries are being used as some sort of excuse, how many more Cups do the Pens have if not for injuries to Crosby and Malkin after 2009. You can argue they could have won in 2008 if not for Malkin being injured.
The bottomline here is that Crosby and McDavid are on the same tier offensively; Crosby's style of play is more conducive to him, and his team winning in different ways.