This doesn't account for the possibility that his teammates have a higher percentage because Kobe is the biggest threat to take a shot and the opposing team sets up to defend accordingly.
The point is to out score your opponent.
As a team. Not as an individual. Kobe taking 50 shots and going for 40+ is orthogonal to the team winning.
Lakers win-loss record w/ Kobe Bryant (up to 2013):
Regular Season: 878-468 (.652) Post Season: 137-89 (.606)
There is a strong correlation between Kobe Bryant's scoring, and winning Laker's seasons.
Kobe Bryant being integral to the Laker's success is absolutely correct. The Laker's made the strategic decision to structure everything around him and it worked well. No doubt that would have failed with a less talented individual.
However, it is important to view his accomplishments in that light. He scored 40+ points in games because the team basically said "Let's have Kobe score 40+ points today". Because of that, his absolute point totals aren't great markers for individual talent.
I wonder if on some forum for Basketball fans somewhere, some folks are sitting around discussing PG's impact on technology and startups.
EDIT: There's roughly a finite number of shots a team can take in a game. If one player takes most of the shots, then sure they will score a lot of points. But are they maximizing team points? If other members of the team have a higher shooting percentage then taking less shots and passing the ball around will be advantageous.