Bada Sawaal: Why opposition is not happy with the CAG report?

The Narendra Modi government bought Rafale fighter planes at a cheaper rate, the CAG report confirmed on Wednesday. The CAG report on Capital Acquisitions in Indian Air Force, which was tabled in Rajya Sabha, does not have any mention about the exact price of each fighter jet. Now, the opposition is not accepting the report citing biasedness. Is it justified?