Better do not comment on things you are unsure about and appear a complete fool. Even his Cricinfo profile refers to his indiscipline. There have been more players who've been terrible against pace bowling than him and still survived. And surely, 4 hundreds in 17 test matches at 55 average including 2 double 100s couldn't have been just anything but indicator of what he had in him.
A terrible series against West Indies did him in, agreed that he had problems against short pitched stuff, but tell me, which Indian test batsman of that time barring Sachin did'nt have that? And with the talent he had, and age on his side, hardly 23, he could've worked hard and sorted it out, instead he lost focus, started hitting night clubs, fell into messy relationships, marriage, divorce, etc, etc. I still remember my teacher advising us to follow Sachin's lifestyle and focus and avoid being a Kambli. And Sachin, when captain, tried to bring him back, by that time, the fire had subsided.