Agree with you, to say Kaka isn't naturally talented and determined it just wrong. I'd argue he has the same (I personally think more) natural ability as Ronaldo, but Ronaldo has obviously taken his body to the absolute limits and therefore is more effective as a player now, that said, Kaka is far from lazy. It just hasn't clicked yet which is in part down to a new league, team mates, manager and style of play and in part down to a season heavily disrupted by injury.
Not to mention Ronaldo is the golden boy over in Madrid, he can do no wrong. You constantly see him trying to do ridiculous things, shots, dribbles that will NEVER come off etc. and it never gets brought up, yet if he gets a shot out of 10 right it's all over the papers.
Ronaldo scored 26 goals in the league, Kaka, did not, nor did he come close, and half his goals were gifted penalties that Ronaldo let him take if Ronaldo had already scored, and Kaka won few of those penalties if any. Kaka constantly through the season tried to dribble through players and constantly failed, he tried everything Ronaldo tried until he was finally dropped, sorry, injured badly except when he didn't want to be, like the world cup.
While playing in the same way, taking on the same shots, dribbling through players and trying to pass the ball around Ronaldo got a bunch of assists, scored an absolute shedload, while Kaka was missing sitters and finding it hard to pass 15 yards without screwing it up.
Kaka has always been massively over hyped and never close to as good as his PR, his highest EVER scoring season he scored exactly half as much as Ronaldo, 21 to Ronaldo's 42, the most assists Kaka has ever got is 12, to Ronaldo's 20.
For the record Kaka managed in his last season at AC, to score 16 league goals in 28 starts and 3 sub appearances, its his best ever league haul, the following season he started 21 games, scoring 8, of which half were penalties "gifted" to him. He also played 38 games for club and country, his best season, the one previously, he played 34 games total.
I find it hard for it to be a season massively interupted by injury if, he showed no signs of injury in the first half of the season, when he was completely crap, and I find it hard to believe he was suffering from a bad injury causing massive pain, he was prevented from getting treatment for, then, saught no treatment in his time off, and Brazil also continued this unheard of situation of forcing him to play with a career threatening injury, again after the world cup ended he waited over a month to seek treatment.
Sorry but its rubbish, he showed zero signs of injury, and made no mention of it, and was utterly crap and after over half a season suddenly he was injured and he'd only played badly because of an injury.
He again showed no sign of injury at all during the world cup.
Sorry but it doesn't add up, and stats wise it doesn't add up. For someone who was a withdrawn striker essentially, he should have more assists and goals probably than a winger of any kind, he's got a pretty poor assist rate compared to most other "main" midfield players and his strike rate isn't particularly good either when you factor in penalties.