Joe Bastianich has no formal training and knowledge in cooking. He is considered a restaurateur not a chef, therefore shouldn't be considered a judge.
Whenever the contestants cook for the public particularly in the team challenges, the contestants don't always wear some type of protective cover for their hair, such as a hairnet.
In many of the team challenges the first team that receives a certain number of votes fastest are the winners, however the speed shouldn't make a difference of which team wins and which team loses,what should determine which team wins is the team that receives the most votes overall.