Well, I only managed to get an hour or so in before my PSP *DIED HORRIBLY, OMG!*, but BBS does imply that there was a lot more training involved for becoming a keyblade master than Sora ever got. BUT - as I understand it, the Keyblade War meant that the keyblade masters were decimated, so there wasn't really anyone to train Sora except for Mickey (who really seems to have spent a lot more time teaching Riku things).
Still, Terra's problems made me think of Riku, and also suggested that maybe their teacher has a few blind spots regarding darkness, and that perhaps Mastery has less to do with training and more to do with mastering your own heart, which would be extremely appropriate in game canon. Sora does kind of fall into it - particularly with the implications that it should have been Riku who got his keyblade - but the changes in him over the course of the game[s] suggest that he does grow into the role(and yeah, I'm thinking of the scene where he claims his keyblade back), even if 'Keyblade Master' is an overstatement at first.
Interestingly, the general attitude from those who could teach Sora about his abilities (Mickey and Yen Sid) seems to be 'Don't worry, you'll figure it out.'
Potential BBS spoilers
Still, Terra's problems made me think of Riku, and also suggested that maybe their teacher has a few blind spots regarding darkness, and that perhaps Mastery has less to do with training and more to do with mastering your own heart, which would be extremely appropriate in game canon. Sora does kind of fall into it - particularly with the implications that it should have been Riku who got his keyblade - but the changes in him over the course of the game[s] suggest that he does grow into the role(and yeah, I'm thinking of the scene where he claims his keyblade back), even if 'Keyblade Master' is an overstatement at first.
Interestingly, the general attitude from those who could teach Sora about his abilities (Mickey and Yen Sid) seems to be 'Don't worry, you'll figure it out.'