Fetisov was great the whole time he was here. Bowman knew how to use him and got years out of him like he did with Larry Murphy when others saw them as finished. Not finished at all, but being asked to play the non creative horrid hockey of the early 90's. As a Detroit fan Slava was amazing to watch. His leadership on that team cannot be overstated. He was the one that brought that team together. Swedes, Russians and Canadians did not all get along back then. It was still the Don Cherry everyone needs to play like a canadian time. To a man that team loves Papa Bear.
Federov was incredible and a better scorer that Datsyuk, but he was lazy guy so Datsyuk was better longer. Bure was amazing. He was hurt a lot unfortunately.
Ovie beats them all due to longevity and how much harder it is to score in his era. He cannot be judged by Cups as the Salary Cap has made putting together a Great team much harder.
Regarding Kharlamov, i went back and found article about him being top 5 of all time. Serge Savard said that so i trust it. Wish i could have asked Scotty and Pat burns when i was able to spend time with them. Leads to:
Unrelated but neat anecdote: I was able to spend time with Scotty Bowman and Pat Burns. One question i asked was Serge Savard or larry robinson a better payer. They both hemmed and hawed but agreed it was Serge. Burns especially said he was just so strong, smart and hard to play against. Surprised me.