Apple are hoping that journalists are lazy or rushing to meet a deadline, so they get headlines line "New iPhone is 40x faster than old iPhone!".
They could have put "2x faster than iPhone 5" in their slides, but they deliberately chose to put 40x (referring to the original iPhone) and leave it slightly ambiguous.
They could have put "2x faster than iPhone 5" in their slides, but they deliberately chose to put 40x (referring to the original iPhone) and leave it slightly ambiguous.