The only thing HP has going for it is magic that changes reality/physics etc. In a straight up war they have no chance against SW technology obviously, a Death Star could just destroy Earth and that’s be the end of it, but if they can turn back time or turn stuff into other stuff, or turn invisible, or bend people’s wills then they may have more of a fair fight against force users. I guess it depends if the force and magic can interact with one another or not, or if they would be the same thing if the universes collided. Cus I guess theoretically magic is stronger in HP than the force is in SW, not that there’s really much to go on in HP about war magic. Theoretically they could keep turning SW technology into ham sandwiches in space, the force can’t really do that.