Australia made my day what is quality batting with wonderful bowling it is really great team of the world. 
That was until Glenn Maxwell took it upon himself to bat India out of the match, his 96 steering Australia to a third successive record chase to seal the this series. Indian still need to improve in all departments but they are not failing very badly but they efforts are not sufficient to win the matches. They should show better performance in next two matches.
Agreed with you that India needs improvement in their performance, but I think bowling is the weak point of Indian team. Indian batsman are doing extremely well as they have scored enough runs in all three matches but bowlers failed to defend such huge total. On other hand Australian batsman are also chasing these huge targets without any trouble.