I realize that we're talking about some of the greatest athletes on the planet, but I don't believe LeBron or Kobe or even MJ could walk into MSG on any given night and say "I'm going to score 62 tonight" and actually do it. I might believe Bird could have done it but only because there evidence of him making predictions and following through (the Xavier McDaniel last second shot, breaking McHale's scoring mark, shooting left handed against the Blazers, etc.)
But anyhow, my point is that it's not like LeBron or Kobe could score 60 points any old night just because they wanted to. Sure, when one of those guys gets into that magical "zone," anything is possible (e.g., Kobe's 61 the other night). But you can't always control when you're going to be in the "zone" and you certainly can't predict it in advance. And also since D'Antoni has surely instilled at least a little pride in his players, there's no way they are going to let him score 62 now that the media is talking about it.
But in the end, I think LeBron's too smart to try for the 62. He'll get 15 assists and beat the Knicks by double digits and be all smiles after the game.