I'm not the most familiar with IC. I only got the Superman tie in trade. But Johns is all about rebirthing classic characters. Hawkman, JSA, Legion, Green Lantern Rebirth, Flash Rebirth, DC Rebirth. I'm not so sure that the larger story was out to make Golden age Superman look anachronistic in the face of what comics had become in modern times. In the IC tie ins both Supermen fail equally.
As for manga, Captain Tsubasa is barely in the top twenty of longest running and it's been going since 1981. How many changes have there been to Superman in that stretch?