Granero was also quick to admit that Arsenal, who lost 1-0 to Norwich City last weekend, will want to respond to defeat and prove any critics wrong.
"Arsenal are a great team with very high-class, quality players," the Evening Standard quotes Granero as saying. "They are one of the best teams in the League.
"They wouldn't have expected to lose to Norwich last weekend, so they will want to respond. Arsenal won't want to lose two League games in a row.
"However we want the victory as well. We want the first three points of the season, so we'll work hard and, hopefully, cause them problems."
QPR are currently bottom of the Premier League with three points from eight games.