In order to demonstrate that the assessment referred to in article R. 2211-3 is more favourable than that of other possible methods of carrying out the project, the purchaser shall carry out an overall assessment of the advantages and disadvantages of using a partnership contract, taking into account in particular:
1° The extent to which control of the project is transferred to the contractor;
2° The scope of the tasks likely to be entrusted to the contractor;
3° The risk-sharing arrangements between the purchaser and the contractor;
4° The overall cost of the project, taking into account in particular the financing structure envisaged.