I don't know what makes you think the Penguins wouldn't have won cups with Ovechkin on the team. He's an elite talent in his own right, and he is almost PPG in the playoffs throughout his career. I think it's silly to make statements like that.
The team would definitely be different with a core of Crosby/Ovie rather than Crosby/Malkin. Maybe it wouldn't have the cups, but maybe that core could have produced a dynasty level of success. Look at how Chicago has fared with an elite Center + an elite winger as their top two forwards in recent years. You never know.
I don't think triple D comments are silly at all. Most of the Pits team lack depth. It's better to have 2 elite centers than an elite center and an elite winger. The 2 elite centers can make the four top 6 wingers produce more. Malkin 2009 playoffs his wingers was Fentenko and Talbot. They had 15 goals in totals.
If ovechkin plays with Crosby. They have no second line. Playoffs is all about depth. If ovechkin plays on the 2nd line who will be the center. If you have Sutter centering Ovechkin no way Oveckin anywhere close to 50 goals.
2016 Pits Cup they won because they had 3 scoring lines. You are not able to have 3 scoring lines If you don't have 3 offensive centers.
It is a lot easier for an elite center to carry the were own line and make it successful than an elite goal scorer.
Please don't compare ovechkin Crosby to Chi Kane and Toews. The similarities stops right there.