John Davidson was on the phone from Detroit, still two games and two nights from the regular-season finish line, and even the seemingly tireless voice of hockey on American TV sounded, well, tired. Asked yesterday how old he is, the NBC/OLN/MSG analyst said: "Fifty-three. After this season, I'll be 64." Davidson has spent the past seven months like a failed dieter on a bonbon binge, going from the barren, lockout winter of 2004-05 to this: Counting the Olympics, about 125 games - "or maybe it's 130, I've lost count" - even before the playoffs begin this weekend. "It's gone from complete hibernation to the verge of being over the line," he said. "But I'm not going to complain. This is a much better scenario than last season."