Once the A17 makes its way to the iPad mini, that'll be even closer.
Two egregious examples: The Final Fantasy Pixel Remastered series, and Monster Hunter Stories. The first has controller support on both the PC and consoles, but not on phones (which came out first). The second launched on a console (the 3DS), and has no controller support on the phone.
That caveat alone makes it so frustrating to play games on the phone IME.
