﴿ أَكُفَّارُكُمْ خَيْرٌۭ مِّنْ أُو۟لَٰٓئِكُمْ أَمْ لَكُم بَرَآءَةٌۭ فِى ٱلزُّبُرِ ﴾

“ARE, THEN, those of you who [now] deny the truth better than those others - or have you, per­chance, [been promised] immunity in the [ancient] books of [divine] wisdom?”

Are your disbelievers O Quraysh better than those? mentioned beginning from the people of Noah to those of Pharaoh which is why they have not been chastised? Or have you O disbelievers of Quraysh been granted some immunity from chastisement in the Scriptures? the Books? the interrogative in both instances is meant as a denial in other words it is not so.