Number one, Noah cannot guard the perimeter vs anyone with speed, they would blow right past him off the dribble for an easy lay up... I've seen it happen plenty times during switch ups where he was isolated..
Sure James never plays 100% game 7 mode but neither does anyone else..
I never said he was the best at guarding the 5 or 4 but he is as good as most Lastly why not be able to use Rose in this argument (he was the last MVP other than James for the longest, and it was a one on one match up at the end of the year for all the marbles, when was the last time you saw some shit like that..
That dosn't mean James stood big only against Rose, shit he has stopped plenty shooters, including Kobe after scoring 8 points in the early 4th, this year, only to blank him in the final 8 mins with the game on the line, after the switch. But other notables LeBron has played against Durant one on one with the game on the line, Howard, Gasol, basically the best of the best in the league and he has guarded them all over the court, as opposed to Noah, who usually defends a territory well..