I feel a bit the opposite Blob - I reckon over time (if you work at it+ perhaps with some good teaching) that almost anyone can develop some degree of feel/quality in their bending and vibrato and there is much more of a hard physical limit on speed - most players are just not capable of doing what that 14yo just did in terms of speed , no matter how much they practice. Obviously some players have limited capacity for feel too but hard physical limitations are not likely to be overcome even with persistence. I never got my sweeping to a level I was happy with no matter how hard I tried.
I started playing when I was six and persisted until I was around 22yo - so I've been dormant for 16-17years - but beginning to study my theory again so look out
...frustrating is an understatement.
Anyway - I reckon I was at my peak around 18-19 yo ...........I'd done Satriani pieces for my VCE at the age of 16 and had improved a bit over the following few years - funnily enough in a DT cover band. I was a very hard "practicer" and fancied myself as a bit of a shredder and a decent feel player too but I can see some things she's doing as good (or better) than I ever did. I think she's amazing , even allowing for her faults and the fact that speed doesn't make a good player. She sure has a head start though.
Anyway..................that's my take. Have to start getting back into it - since I quit I've never felt that I had the motivation to overcome the frustration of not being able to do what I used to do as a kid. .... but I think I might be on the way.
Cheers.