How does he handle what we might call special effects?That is, how does he make his monsters fearsome, his goddesses stunning, the dangers frightening, etc.?
Although these two stories do seem very similar as far as characters and events I personally think there are more differences between the two.
In "The Iliad", the gods are portrayed as pretty deceptive, temperamental, and backstabbing.
That is how it takes place in the epic poem anyway.
In the film, it is the short, awkward moment of Ulysseus and his wife meeting again, to find out that Penny has completely and totally moved on.
Several of the Gods conspired to put Zeus to sleep so they could help the Achaean's win, and the battlefield is essentially one giant chess board for them, with mortals as their pawns.
In "The Odyssey", the Gods seem a little more benevolent.Though these two stories were written several years apart they have many similarities which may be the reason some believe "The Odyssey" is a sequel.Homer is known for being the author of both stories.There are few similarities between the film and the epic poem, but it is still believable that the similarities can not be compared to the shining differences.The poem is such an inspirational and heartfelt spectacle, it makes the film appear unimportant and no deep emotion involved with it.There is a lot of sneaking around behind each other's backs to aid one side over the other.Hera wanted the Achaean's to be triumphant, but Zeus tried to remain neutral.Some even have a theory that "The Odyssey" is the sequel to "The Iliad".Unlike many sequels in the present era, "The Odyssey" actually seems to be an improvement in some respects on the original, and stands quite well as an independent work.Also, Odysseus, in the poem, was disguised as a beggar, and his wife Penelope, had no idea who he really was.She tells him of the whole in her heart ever since her love disappeared, and he knowingly reassured her that her love would return.