There's plenty to critique about the game in its own right, such as spells being balanced around mostly failing, which doesn't feel great, and the weirdly large number of plant person species to choose from instead of enhancing existing species with more options, but those are all internal criticisms that don't really apply when making an external comparison to 5e. If comparing to 5e all you really need to do is describe how it'll play differently for the players, and in my experience players aren't usually 100% open to learning a new system if there's any friction in doing so.