Anyone that draws any conclusions abot Kanter's ability from these two games is simply a pessimist. Did you watch how these games were played? How many times was there a play ran to feed the post (Hint: Guess low)?
Do you think the guy that put up 34 (iirc) against Sullinger, Jones, Barnes, etc. was simply lucky? Did all the games in u19 mean nothing, but somehow does for Jonas? Did dozens and dozens of NBA GM's, scouts, etc. just totally miss it?
It will be a while before we know the answer to these questions, but if you blame Kanter's lack of production on him, you either didn't watch the games, don't understand the game, or are trolling.