Talent, is its rawest form, is something generally considered separate from Attitude and Demeanour. Its why so many people waste their talent, due to a poor attitude or unstable demeanour. Of course you can argue that mental attributes can be called Talent, and so can Heart even, but generally, in footballing terms, talent IS how capable a player is in his position, with the ball at his feet or a player to tackle.
I wish Marchisio had much more aggression, more bite in the challenge. And more of a desire to be constantly involved rather than ghost in and out of games...I find Balotelli to be irritating, with a shockingly arrogant character, but in terms of natural talent, for his position, compared with Claudio's natural talent, in Claudio's position...Balotelli is far more talented, to my eyes and football mind at least. A prize prick, but still...extremely talented.
I would say that a measure of Greatness demands more consideration of attitude, spirit, heart, demeanour and morality, than a measure of Talent.