Parody and Evaluation

If, as Nietzsche suggests, in the preface to The Gay Science, that Thus Spoke Zarathustra is a parody, the probable target of which is the moralizing that he describes in #1 of the body of the work, then neither Eternal Recurrence nor the Will to Power are to be taken completely seriously, in which case nor is theorizing about their systematic relation.  Still, Parody has its own evaluative criteria, one of which is consistency of tone.  But, while the events of Zarathustra might have a comic dimension, Nietzsche seems dead serious while developing his theory of the Will to Power, proposing a revaluation of all values, and, especially, when diagnosing and fighting the concrete malignancy of Ressentiment.  So, either he is a failed parodist, or else he writes from a serious, more comprehensive perspective, the expression of which is only partly comic..