What exactly are you trying to defend here, apart from Apple's honour? TLC is inferior to MLC. I would prefer MLC flash in my iPhone 6+ given the choice. What is so difficult to accept about this? TLC isn't quite as fast overall, it doesn't last anywhere near as long, and there are reports of TLC flash causing problems with certain iPhones. All in all, given the choice most would choose MLC. Apple puts TLC flash into some phones purely because it is cheaper, so how can you defend that?
I'm not defending anything. Apple doesn't need my defense.
I'm literally throwing Gb and Gb at my Samsung daily, and I'm sure a quad core i7 is quite an heavier client than your iPhone....
TLC on a smartphone are more than adequate.