Pros and Cons of using Django over Parse

I just wanted to know is it better to build your own backend with Django Rest framework or use Parse Server instead, if the scale of the app is very large? and also is it easy to migrate from one to another?

Having never heard of Parse Server before (thank you!) take this with a grain of salt - but it really looks like an Egg to Watermelon type comparison. They appear to cover two completely different sets of application requirements.
(Granted, I’ve only spent about 5 minutes looking at this, but it appears to be little more than a front-end access mechanism over a MongoDB instance. It looks like it’s supposed to be embedded within an Express app, so I’d say that the real comparison would be the choice of Django v Express. Please correct me if I’m misunderstanding this.)