The Super Bowl champions Giants football team were feted by thousands in a ticker-tape parade on Tuesday along lower Broadway. Below, Mayor Bloomberg presented a key to the city to Big Blue linebacker Antonio Pierce. All the Giants team members and coaches got keys to the city. “The Giants may not be perfect, but at least no one is this year in the N.F.L.,” quipped the mayor, toasting the team’s spoiling the Patriots’ bid for an undefeated season.