1) What is your assessment of Papa John's differentiation strategy? On what bases does the company differentiate? Identifying the bases for differentiation is very important! 

2) Is Papa John's strategy sustainable? What is your assessment based on a VRIO analysis? 

3)what do you recommend Papa John's do to achieve its growth goals? 

I highly recommend you try to find out Papa John's prices and menu and compare them to other players in Canada, like Pizzaville, Pizza Pizza, Pizza Hut, etc. Is Papa John's differentiated in Canada too? That will give you a comparative perspective when you are developing your recommendations in general. Also a professional report that shows how you analyzed Papa John's external environment, internal capabilities and resources, and its strategic options. Give your recommendations accordingly.