Contrary to Eisha's blame that Armaan isn't cared for by his own brother, I feel it has been Veer who has taken care of him throughout their century long lives. Like from the flashback where he saves him from their father to saving him every single time he's on the brink of death. Eventhough he masks it in the name of his need for revenge and to an extent may not even accept it to himself, he does care a lot despite all the hurt and anger from betrayal and misunderstandings. Infact, I feel he has this much hurt and anger towards Armaan only because it all came from him.