Van der Vaart scored a memorable volley in midweek as Hamburg continued their resurgence with a 2-2 draw against Borussia Monchengladbach.
Hustzi told BILD: "Van der Vaart is a super player. He played for Real Madrid and Tottenham and has 100 caps for Holland, that says it all.
"But HSV is not only Van der Vaart. A player can do a lot, but not everything."
Huszti has been in impressive early season form at Hannover, with the Hungarian striker scoring four goals in five Bundesliga games.