Anakin's ambitions were very much to become the best "classic" Jedi there ever was. Its hard to say exactly how Anakin would have turned out under Qui-gon's training, but I'm kind of hard pressed to look at Obi-wan's training and say "this, right here, is what he did wrong." Giving him special treatment maybe to foster his ego, but the circumstances of his recruitment into the Order make that impossible to avoid at this point.