Topic 8 Financial analysis

Hi

I have chosen Sainsbury’s as the main organisation and comparing it to Tesco in the financial analysis. However, I am not sure if it is a good comparison as Sainsbury group includes Argos and Habitat (they don’t break down their grocery only sales and just report it all together under one revenue stream unfortunately). Would I fail if I compare Sainsbury to Tesco if I mention in my report that this is a limitation?

Is there anything I could do?

Thank you