EXACTLY!!!!
What matters is HOW you're practising stuff, not WHAT you're practising.
Again, I'll do another exmaple.
Person 1 could learn all the licks off of Intense Rock, Speed Kills and Rock Discpline and play them all full speed and be really sloppy BUT he'd still know all the licks.
Person 2 could practise 10 licks over and over and over and get his fingers repeating 3/4/5 note patterns and get his fingers flying but not actually know any full scale runs.
I can say that person 2 will end up with the better technique because he'll be training his fingers to do the smaller "fragments" that are required for all the full string runs.
If you can't do this at 140bpm:
A----------8--------
E-8-10-12----12-10-
Then how THE HELL do you expect to be able to play the full 6 string version of it??!?!?!!?
That's what all these youtube idiots are doing. They've been playing 1 year, they can't bend or vibrato but yet they're learning all these Racer X solos when I would bet my life that they couldn't play all the BASIC "fragments" that Paul Gilbert and John Petrucci show on their videos.
It's just common sense really but most kids just can't wait so they learn it all and play it as fast as they can. It's very frustrating when you get to this point because it takes ages to progress but it will be worth it if it's what you really want.