77It must also be borne in mind that, according to the case-law, the notion of serious difficulties is an objective one. The existence of such difficulties must be sought both in the circumstances in which the contested measure was adopted and in its content, in an objective manner, comparing the grounds of the decision with the information available to the Commission when it took a decision on the compatibility of the disputed aid with the common market (Case T-73/98Prayon-Rupel v Commission [2001] ECR II-867, paragraph 47; see, to that effect, Case T-49/93SIDE v Commission [1995] ECR II-2501, paragraph 60). The applicant bears the burden of proving the existence of serious difficulties and may discharge that burden of proof by reference to a body of consistent evidence, concerning, first, the circumstances and the length of the preliminary examination procedure and, secondly, the content of the contested decision (Case T-36/06Bundesverband deutscher Banken v Commission [2010] ECR II-537, paragraph 127).