220In the first place, as regards the replacement of existing assets with their more modern equivalents, the Commission stated, in recital 900 of the contested decision, that such a replacement could not be accepted since it amounts to adjusting the costs without properly adjusting the depreciations. The Commission referred to that paragraph in recitals 889 to 893 of the contested decision, in which it expressed doubts about the adjustment, as it was proposed by the applicant, of the costs of assets for the period between 2005 and 2010. Moreover, the Commission considered, in recital 901 of the contested decision, that such a replacement of existing assets was not compatible with the equally efficient competitor criterion. The case-law confirmed that the abusive nature of the pricing practices of a dominant operator is in principle determined in relation to its own position. In the present case, the adjustments of the LRAIC suggested by the applicant is based on a collection of hypothetical assets and not on the same assets as those held by that operator.