If a couple has 2 kids, in most of the cases, one is more understanding and mature than the other.... well the case varies only that either it happens to be the elder one or younger one..... and the love given to them by their parents is equal but may be expressed in diff. ways....
CASE 1: Suppose here a couple's thinking is so that since the elder one is got the love and affection for a longer period of time.... some parents shower more attention on the little one always pressuming the elder now is elder and can manage ...... the words 'can manage' or 'should manage ' makes the situation worse in a child's mind....which results in neglection and possibly aggressive qualities too will tend to arise.
CASE 2: Sometimes some parents tend to shower extra attention on the elder one thinking they must not neglect the first one just b'coz the entry of second as they feel the first one should not be neglected and very conscious efforts will be taken to make the first feel at home and prove again and again that their love for the first one still remains the same to avoid any insecure feeling creep in.... In this case what happens is the younger one learns to live independantly with wise thinking and the elder one is still dependant on their parents and are more immature than the younger one.....
Here the case of Suhana is the CASE 2 where she was showered with more attention.......or I can say even more to compensate a mother in her life....where as Sanjana emerged more independant and mature thinking creeped into her much before her age......
I think a parent can emote their love to the children only rationally and if any differences seen by the kids in this matter is just due to their wrong perspectives of viewing the same....😛