Heh, all this talk about taking on the 'gods' reminds me very much of Feanor and his sons.
I guess Ar-Pharazon is really getting dotty by then. I mean, his father and grandfather had died earlier than their ancestors, and if you are faced with the prospect of dying anyway, why not go down fighting? Though I agree that he should have smelled a rat when Sauron did not come along with him...