Fortunately, for some people "better" does not nesseccarily mean "faster".
For shame, for shame.
But his playing is not inspiring.
I can understand this.
It's easy to be inspired by Arrau or Horowitz, because their speeds are acheivable.
But all Grynyuk inspires most people to do, is give up, because they don't have a chance in hell.
The poll says "impressive octaves". Nothing about faster. 
I don't think I've heard it faster. But it didn't impress me much. He's shallow.
I admire good piano technique for it's own sake but if it's not connected to a musical intelligence or is somehow expressive it's just that, good piano technique. I would rather listen to someone who has both technique and musicality. Why shouldn't I buy the complete package...
The complete package evidently doesn't exist.
When a certain level of speed is achieved, musicality becomes irrelevant and it enters the realm of pianistic olympics.
To denounce a pianist with 'the fastest octaves ever' as 'not very impressive', is to(in my view) prove your lack of passion for the art of pianism, which is sandwiched between the reals of music and physical feat.
I can appreciate both, independantly.
Againt with the sports analogy, why should you be ANY LESS impressed by his octaves than people are by the fastest track athletes in the world?
I believe appreciation for technical merit can exist happily without the subjective distraction of 'music'.
The ideal for most, is a marriage of both, but for most people 'musicality' is a distraction from technical excellence.
Only those endowed with the mystical gift of 'fury' can happily form a symbiosis of music and athleticism, as their 'musical' instincts also tend to the higher warp factors.