Leonard "Red" Kelly outstanding at two positions - defense and center. Within three seasons of his arrival in Detroit and Toronto became a key part of dynasty teams. Facilitated Borje Salming's adaptation to the North American game.
My appreciation of Red Kelly was posted previously, copied above.
Kelly was physical especially when he was playing center, fighting thru checks to get into the slot and being very responsible defensively tying up the other center. He was not a perimeter player. Kelly was also a contemporary of Maurice Richard and I never saw Maurice Richard pull his "buttonhook" move on Kelly when Kelly was playing defense. Kelly was not above using his body to create obstacles or eliminate them. Lidstrom as evidenced by the Umberger video rarely does use his body in such a fashion.
http://www.hockey-reference.com/players/k/kellyre01.html
Kelly's PIM during his Detroit years reflect a physical side to his game, including majors.
Whereas Lidstrom's PIM are comparable to Kelly with Detroit when you factor in app 20% more games:
http://www.hockey-reference.com/players/l/lidstni01.html
The only upward spike comes 2005-06 and later with the anti - obstruction calls - willing to hook, hold etc instead of using the body like Kelly did to eliminate a threat without trying to blast the player into the cheap seats.
Red Kelly was the last NHL player to successfully blend a career as a defenseman and a forward. Similar to greats like Cyclone Taylor, Ebbie Goodfellow and others.
As for good fortune. Conveniently overlooking that Lidstrom had the good fortune to be drafted by Detroit as opposed to one of the weak teams.
Granted great players and great teams have a way of finding each other. Detroit managed to get Red Kelly out of Ontario and the Toronto Maple Leafs back yard. Then when Kelly refused to be traded to the Rangers the Leafs stepped up and arranged a trade when other teams did not. That the Leafs(Punch Imlach) had the vision to use Kelly in a different role is a tribute to them and to Red Kelly who accepted the change and integrated himself into a new team , adapting to a different position and role creating the resulting rewards for all.
So Kelly is rated higher than Lidstrom for the reasons outlined.