The defender was frustrated at the lack of focus shown by his side during its 2-0 Champions League defeat to AC Milan, but insists it will fight to turn the tie around.
The Liga leader was defeated 2-0 in comfortable fashion by AC Milan on Wednesday, leaving the club with a mountain to climb if it is to live up to its billing as the favorite for the Champions League crown this season.
Pique acknowledged that the display at San Siro was far below what has become expected of the team in recent seasons.
"It's a very bad result. When they scored their first goal we lost focus. We have to improve, learn and wait for the return leg at the Camp Nou to qualify," the 26-year-old told reporters. "Maybe we're not as good as everyone said.
"The San Siro is a tough stadium to play in and we know that Milan is a big club. We are Barcelona and we have to turn the tie around."