Not necessarily. Canned pumpkin is literally just pumpkin purée while pumpkin pie filling is pre-sweetened and designed to be a convenient filling for any pumpkin pie. So, while you can technically use either for homemade pumpkin pie, each one will give you a very different taste experience.  If you want a sweeter, more pumpkin-y filling, go with pumpkin pie filling. Or you can make your own pumpkin pie filling by following the steps in the recipe above!