Eternal Hell And Imposing Of Jizya On People Of Book
My understanding is that the differences is only upon whether they must face death in this life as you highlighted. However, path of kufr will always be eternal Hell. But because Ghamidi Sahab say that it is a warning, it means we will see how Allah will ultimately judge everyone and whether He chooses to complete His warning exactly or choose to let go. In the end, it seems that because People of the Book accepted the truth partially (tawheed) then Allah gave them more time to reconsider their actions while in humilation and save themselves from the path of kufr (i.e Eternal Hell) but the mushrik rejected all of the truth and proven to be stubborn so there was no hope for them it seems.