prime pronger took 2 medicore teams and 1 good team to the stanley cup finals. Pronger made marc andre bergeron a legit player. he compleely dominated when he was on the ice and made his whole TEAM better.
I mean, if you want to get technical about it, Crosby joined one of the worst teams in NHL history and has been the biggest part of why they have been a cup contender every single season since 2008.
That team has had depth issues and erratic/bad goaltending through a lot of that too.