Equality as such is nowhere. Love is a semtiment and this is unmeaurable. This is a personal feeling. Question of equality of love does not arise. Drupadi was duty bound to love all Pndava- her husbands equally. But she loved arjuna more.
It`s really impossible to love all equally, But mothers really love all their children the same. Mothers are expected to sacrifice everything for their children..
I don't know any person in this world,who don't have mutual disputes with any one in this world. No one can love all of them equally. This is not possible.