Goffin, on the other hand, is 22 and never even reached an ATP semifinal. He literally has one good tournament in his entire career, RG 2012, where he beat Stepanek, Kubot and Clement as a lucky loser after losing to my crap countryman in the last round of quallies. That's it basically. He never beat or even pushed any of the current top 8/10, his game is one dimensional and he can be overpowered in ridiculously easy fashion (not just by big hitters). In short, he's a potential good ATP player, never a threat at the highest level by any stretch of the imagination. He's just overhyped because he loves Federer. I'm not kidding when I say he literally never did anything else btw, not even a 250 SF to show for.
Goffin has had a grand total of one (!) season on the ATP tour, and in that season he went from a ranking of 174 to a ranking of 46. I really don't think it is reasonable to expect more than that. In the slams he lost to Federer, Fish and Berdych respectively, who are all in or around the top 10.
In Djokovic's first season he didn't make the QF in a single ATP event, and reached no further than R32 in the slams.