Barca currently sits joint top of La Liga , with Atletico Madrid also having secured maximum points from its opening six games .
Pique believes Diego Simeone 's side will be a genuine title threat come the end of the season .
Barca currently sits joint top of La Liga , with Atletico Madrid also having secured maximum points from its opening six games , and Pique believes Diego Simeone 's side will be a genuine title threat come the end of the season .