They aren't the same thing, which is why I pointed out the two links. Obviously, this is beyond your grasp, so I'll display it graphically for you.
Not to mention that you have to login to xbl to even get to the first (TNL rollover) screen which provides zero info as to what you've played, what your completion % is, country rank, world rank, achievements/game, gamerscore/game, etc... They are, clearly, not the same.

