Ahh, good ol' Dr. Lustig.
This guy has been debunked thoroughly, and I don't really trust much of his work to be honest (not bashing this study because I haven't read it, but his sugar and fructose scaremongering has gone much too far in recent instances).
Actually, Alan Aragon addresses this study in his posts about Lustig's claims about fructose, I suggest you check them out (as well as the comment section, which is just as educational as the actual post, as Alan Aragon and Lustig go back and forth, Lyle McDonald is hilarious, and Fred Hahn spouts his usual nonsense).
Original post: The bitter truth about fructose alarmism. | Alan Aragon's Blog
Recap post, outlining the best of the comments and the whole situation: A retrospective of the fructose alarmism debate. | Alan Aragon's Blog