Abbas - Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs
'Utbah Ibn Rabi'ah said: “if what Muhammad (pbuh) says to his Companions about Paradise and its bliss is true, we will surely be better than them in the Hereafter as we are better than them in the life of this world”, and so Allah revealed: (Shall We then treat those who have surrendered) shall We then make the reward of the Muslims in Paradise (as We treat the guilty) as the reward of the idolaters who are the owners of the Fire?
Are We then to treat those who submit [to Us] as [We treat] the sinners?, that is to say, as belonging with them in terms of reward?
Maududi - Sayyid Abul Ala Maududi - Tafhim al-Qur'an
This is, a rejoinder to the chiefs of Makkah, who argued with the Muslims, thus: "The blessings that we are enjoying in the world are a sign that we are favorites of Allah, and the miserable lives that you are living are a proof that you are under the wrath of Allah. Therefore, even if there was any life after death, as you say, we shall have good time there too, and the torment would be imposed on you, not on us!"
That is, "It is against reason that God should not differentiate between the obedient servant and the guilty. How do you regard this as reasonable that the Creator of the universe should, like a blind ruler, not judge which people in the world obeyed His commands and refrained from evildoing, and which people committed every sin and crime and perpetrated every cruelty fearless of His punishment? You have seen the adversity of the believers and your own prosperity, but you have not appreciated the distinction between their good morals and your own evildoing, and have given your judgment without the thought that these obedient people will be treated like culprits by God and the guilty like you will be granted Paradise. "