The iPhone 6S Plus at single threaded performance is probably there.
Even if it is, that would still mean that it's 4x slower.
That thing competes with Core M in IPC, per core. It's a little crazy. Though it might be a bit unfair to x86 chips since the ARMv8 ones, particularly Apples, do so well in encryption it drags the whole score up a bit. But since it uses a geometric mean it shouldn't be that much.
Point being, Core M is much better than Atom per core, Jaguar is maybe a little better than Atom optimistically, clock for clock, core for core.
So the A9, it's probably actually doing a bit better than the consoles on a single core basis, though yes, having 7 cores still puts them well ahead.
If Apple got core happy and threw quad Twister cores in the Apple TV, with that large heatsink and no battery to worry about to keep up clocks...Then the consoles would be very rapidly encroached upon.
Then for GPU the A9X is already around what, 400-ish Gflops? 90% increases per year for two years would have it awfully close...