I imagine it as a type of "competition" for Aladdin to choose one of them to fulfill his wishes, Alastor has great power and rank so you can ask him many things (without moral limits) but the price is high, the genie maybe It has a greater power, but you have to be really specific and it can't do certain specific things.

This is funny because Alastor badically sings a song like this in the show lol

This fits so well

thats funky😎

Can we get Alastor to sing “You’re Only Second Rate” now?

I'm definitely reading this as a "Hell's Greatest Dad" style competition to get Alladin to chose who to tell his wishes too.