Absolutely not. God Emperor of Dune is an intellectual piece of science-fiction literature by a highly articulate, skilled writer that was pushing the genre as far as it could go. The prequels are pulpy, throwaway Star Wars action novels. I commend Christopher Tolkien and the Tolkien Estate for resisting the temptation to licence out Middle Earth to other writers. You just end up with a diluted legacy from hack writers looking to score a quick buck.