There could be a few reasons for this:
-It could be that the PS4 has more built-in filtering options than the Amazon Box.
-It could be that the PS4 is better equipped to handle filtering than the Amazon Box.
-It could be that the PS4 is more widely used for online gaming and therefore has more filtering options available.
It really depends on what kinds of filters you're looking for and what you're hoping to achieve with them. If you're looking for something specific, it might be worth checking out the PS4's filtering options to see if they meet your needs.