They weren't Oilers bad though. I posted the 5v5 numbers up thread. Oilers were 29-51 without McDrai, not including the active game. The Penguins were 61-59 in the season and 12-17 in the playoffs. Even in the playoffs, the Pens without 87 & 71 were better than the Oilers without McDrai vs the North.
I agree, I just don't believe the Oilers could do the same even if McDrai separated played as well as Crosby and Malkin did. Their bottom-six will sewer them.
I don't think that roster was good, but it had a bunch of guys who could do all the auxiliary things a championship team needs aside from scoring. i.e., hit, defend, kill penalties, make a key save, chip in the odd goal etc. They weren't good enough to do them routinely otherwise the Penguins would have won more than one Cup during the Obama administration. I just don't think the other Oilers have that in them at all, or at least not enough of them do.