I have the x1 Android TV tablet running asop vanilla Android and it literally laughs at anything I throw at it.
It is like another member mentioned in a whole different power consumption league.
It's not fair to compare them but nothing in the power envelop of a phone can come close.
The things runs native doom 3 port that my pc struggled with at like 60fps.
II ran some benches and it was scoring like 100fps more then the ax8 in most gaming runs.
Here is my x1 running some benchmarks
I just ran t Rex off screen on my gs6 and scored 56fps and ran the same test on my x1 and got 115fps its 2x the gpu power of the gs6 and the gs6 is no joke