To some extent, there is the factor of "natural talent". You look at some of the top players and virtuosos and it's safe to say not everyone can do that, even if they practiced just as hard. You are born with certain skills.

On the other hand however, if you practice hard enough I'd say you can definitely get to places that you never thought were possible. Speed comes with time. Just remember that speed does NOT equal skill. A lot of times you'll see people doing really cool stuff and thing they are amazing, but they might just be running a simple scale really fast. Don't think that in order to be considered good you have to be lightning fast. You'll get there eventually if you stick with it.

That guy has some cool videos by the way. I'm jealous of his abilities myself haha.