Riddle shouldn't feel this way, he knows he can't. It would be immature for a Housewarden to hate someone over academic grades, maybe he isn't jealous of the grades, maybe he's jealous that someone as annoying as Floyd and Ace could be on his level, maybe it was because he didn't have to go through all those years of over studying and preparing himself, maybe that means his mother was wrong..and maybe he could have a normal childhood and still be the top of his class. No, of course not.