This line stands out to me as peculiar. Most people growing up in a Christified society catch onto the monotheistic theme of Christianity pretty easily, so it's assumed that none of the other gods that were worshiped by other nations in the OT were ever real as YHWH is stated to be. This line, though, suggests otherwise. So either one of two things is going on here; YHWH, who in the Bibleverse is totally real, is going to oust the Egyptian gods for not being real and therefore "judge" them... or he's going to somehow take them all to to his own divine court, try them and penalize them. How the fuck does that work? There's one of him and dozens at least in the Egyptian pantheon; is there some kind of Inverse Deity Law analogous to the one for ninjas? Or is he going to go all Judge Dredd on their asses and just dole out the judgments on the spot?
Sure, there are lines about him being the "only" god, but that could just as easily be a forceful statement intended to drive home his supremacy to his followers rather than a literal one. In fact, in a time of superstitious Bronze Age nations, I would think it would be common practice for a nation to assume that "their" gods were responsible for their creation, their neighbors' for creating them, and so on, without constant bickering over whose was real. Most religious disputes from antiquity strike me as being more like pissing matches over whose gods were stronger, not whose was real. What's the general consensus on the ancient Hebrew perspective of the authenticity of foreign gods?
And who wants to draw a picture of Judge God in a firefight with the Egyptian pantheon?
We have seen in Doctor Who that Sutehk is much more powerful than any feats of Yahweh, so Yahweh had delusions of grandeur and took on more powerful foes. 
