Attempting to explain the trends shown in the data, NPD analyst Stephen Baker told The Wall Street Journal he believes that Android loyalists are committed, and even dangerous exploding batteries in the Galaxy Note 7 were not enough to push significant numbers of customers over to the iPhone."Most of those who bought or wanted to buy a Note 7 opted for a different high-end Galaxy phone," Baker said.
This is exactly what some posters here were saying. Exploding Notes are not going to add to iPhone's numbers in any significant way. Smartphone uses who picked the Note are likely tied to the Android eco-system and wouldn't leave it easily.
Moreover, didn't the number of Notes be pegged at around 3 million or so? That would have been a rounding error on the iPhone numbers.