"mostly from top end phones"? That is a very wrong statement. Among the 70 million smart phones Samsung sold in 2Q 13', the top end phone made up less than 40% of them. Of course, that's not the case when you talk about the total profits generated by the top ends vs. the lower ends.
Not sure whether your "less than 40%" is correct since in the quarter 23 million s4 was sold. That's for only about 2 out of 3 months in that quarter. Add to that S3, note 2 and those mega.
Even if your estimate is correct that 40 percent equate to 28 mil high end phones. How many ip5 out of 31 mil that apple sold? Maybe 20 mil.