One detail I would not overlook is whether the platform’s general “Canada” availability actually applies to every province.
Winrolla Casino is a good example because available information specifically lists Ontario among its Canadian restrictions. I would therefore establish the user’s province first, then look at the operator, licence, age requirements and participation conditions. Only afterward would I compare game variety, website functionality and customer support. That approach helps avoid treating Canada as one completely uniform market when the applicable rules and availability can differ by jurisdiction.