Abhi tak jo dekha hai maine, in short the story is rich guy with attitude and a rich girl but who's grounded and religious. This base actually reminds me of Mera Rab Waris.
Coming to the characters itself, Dua and Nageen are poles apart. Dua has a harmonious family and is a softer person so far. Nageen was hardened because of her life experiences and had opportunistic people around her (her jija and jija's mother). Dua is pursuing Islamic Studies and is religious. She seems to be a calmer and more content person. Plus she's grown up surrounded by nature so that reflects in her personality.
Dua was also not rude to Mustajab (Feroze), unlike Sultan and Nageen's first interaction. She spoke to him very nicely, even though he did say certain things that could have rubbed her the wrong way.
Mustajab tbh is fascinated by Dua because she is an independent girl who has her own mind and has made her own decisions. He is very modern so it surprises him how she's chosen to study religion out of choice, not pressure.
Coming to Mustajab...I gotta say the opening shot of him swimming in full diver's gear was hilarious 😆 Geo censoring to save themselves from PEMRA phupha 🤣
So it seems he's from a really rich family too, like Sultan, and only seems to have his mother with him. The bond between the two was adorbs, because they genuinely care for and love each other.
Like Sultan, he is really disciplined.
There was no such badtameezi from his end but I'd say he's very to-the-point in conversations, which can hurt a person's feelings. On the other hand, Sultan was always such a moofat and had a certain aura that you kinda knew his way of talking. Mustajab seems so humble initially that the words he says can surprise you.
Sultan was a very angry man and was arrogant too. He was strategic and a brilliant businessman. This was established in the first episode itself. Here, Mustajab looks like he's self aware (not arrogant) and has that air of confidence.
Sultan never gave a damn what women thought of him whereas Mustajab owns up to the fact that women are "waiting for him".
As of now, Dua rejected Mustajab and he decides to confront her about it in a civilised way. Unlike Nageen, who threw his business card on his face and walked away. Sultan also had the same approach as Mustajab, but Nageen's behaviour triggered his anger and deewangi.
Basically if Nageen had spoken to Sultan the way Dua spoke to Mustajab, they would actually end up married.
But if you want my honest opinion, then a girl like Dua would have made a better life partner for Sultan. They could change the religious angle so that it wouldn't be a direct comparison to Mera Rab Waris (another Danish starrer), but a girl with that kind of nature would have been Sultan's soulmate.