am not going to take too much of your time as I know you guys are already fretting about the latest spoiler news about Jodha getting pregnant.
I will just give you my take on these three powerful ladies in Jalal's life.
Ruqiya: His first wife and his friend. She is an important aspect of his life with her he can be very open and frank but what do they discuss when they are together-- the state and its affairs-- So Ruqiya is more like a friendly companion to Jalal and the wifey bit becomes secondary.
And yes...there is her need of power and Authority which doesn't let her to be a true wife to him even still she doesn't have the guts to go against his order or decision.
Salima: Older than Jalal belonging from the same family tree as Jalal and Ruqiya plus ex wife of his trusted shah baba. She respect Jalal as a husband...for her he is her husband and as a wife she must accept and do whatever he says or order--- there is no other thinking of going against his will.
Jodha . A wife which is not Muslim and neither is from the Muslim Royal lineage from which Jalal and his other two wives belong but she belongs to the brave Rajput clan which are as Royal as any Mughal. She is brave, beautiful, intelligent and also have the guts to go against Jalal's decision.
It is she who is going to have a totally different realtionship with Jalal...and what would that be...come on!!!...Guess???? Well! she will be his lover...
Now you see for Jalal Ruqiya will always be wife + friend, Salima will always be older wise wife but Jodha will be his lover + his wife and his trusted friend.
According to history Saleem (Jalal and Jodha's son) was favorite of both Ruqiya and Salima and it was them who begged Jalal's mercy when Salim started a revolution against his own father whereas Jodha sided with Jalal...Also Saleem got married to Jodha's brother's daughter... who gave birth to Khurrum ...Did it tell you- How important Jodha and her family was to Jalal.
Also As per history it will be ruqiya begum who will get pregnant again and will give birth to twins but they will die soon after their birth...afterwards she will remain childless her whole life. Another thing Jalal will also have two sons from Salima begum as well ---thats also history whether u like it or Not :)