Is Nietzsche 'Cometh The Man on Horseback' to existentialists?

Question

Is Nietzsche 'Cometh The Man on Horseback' to existentialists?

Answer 1

... his work was sadly unfinished.

He's more of a prophet telling of the coming of The Man on Horeseback

Answer 2

Yes.  He is their saviour.

Answer 3

No, sadly he took his philosophy far too seriously and it seemingly drove him mad.

He was like the Einstein of morality and he failed to realize his Grand Unified moral theory just like Einstein failed to realize a Unified field theory before his death bed.

Nietzsche, I think, actually felt the burden to supply a humanity with a rational moral foundation but it is a daunting task to undertake.