[drcode]

iOS gives priority to ease of learning over efficient workflow for power users. I agree this gave them a HUGE advantage early on, but as users become more sophisticated in using mobile devices this "priority to beginners" philosophy is going to let Android slowly eat their lunch.

[uams]

iOS7 is already doing that. It's switching from skeuomorphic buttons to just typography.

This doesn't address your larger point, given that the switch to lines doesn't mean that they're bringing advanced functionality yet, but it's a sign that they are willing to trade away easy of learning.