Well wouldn't you say with this win he is already better than them, I know he's ranked as the #10 junior, but that's junior, just cause Quinzi's a better junior does not mean he will be a better pro.
Quinzi didn't win any match on the ATP level and he is already 17. He is not in a hurry to do so either, as his higher ranking is determined by results in the Futures circuit only.
I don't get the so big difference that people make between "tours" in this forum. It's like fetishism in my eyes.
Lajovic usually plays in challengers actually.
Besides, in my eyes, a player is not only defined by his "best" results as people usually think in this forum, but also by what he can do consistently. Not even speaking of the suspicions which may emerge from such a surprising isolated result when there are so many noises about fixing at the moment (I think you heard about that in football recently).
Garin has consistently lost more often in futures than Quinzi so far (I don't look at results in junior tournaments but it's also probably the case as Quinzi is better ranked there.)
And Quinzi has never played against a guy like Lajovic in a challenger or an ATP tournament, then how can you say that Garin is better than Quinzi just because he was lucky to get a wild-card in an ATP tournament ?
So far, in the tournaments where they have both competed, Quinzi has been consistently better. I don't know or like any of them, but that's just my criteria.