Original Sentence.......
Samsung is chipping away at Apple's brand power.
What you interpreted as........
Samsung is chipping away at sales.
I'm not talking about sales, I'm talking about what eventually leads to the rise or decline of sales. If the iPhone brand of Apple doesn't stay synonymous with being the absolute best, it simply can't play at it's own pace anymore without eventually losing mass sales.
Blackberry had the same prestige in it's smartphone brand, but that went away in a matter of a several years when BB didn't feel like playing catch up. What makes it even more dangerous for Apple is they are not just a smartphone company. This means if the iPhone brand becomes degraded, Apple fans still have Macs, iPads, and etc. Hardcore Apple fans will not feel they are leaving Apple. I already know some people who have Apple everything, but gave up the iPhone for other brand. Nobody is going to feel compelled to iPhone loyalty.
Again, it only takes that one model, as proven by the iPhone itself. And with Samsung's aggressiveness at model upgrades, there is a good chance it could happen.