Rue Morgue/Criticism/Poetic Principle Comparison

I have to write a short paper on similarities/differences between a Poe short story (I chose Rue Morgue) and his critical essays on what he believed poetry should be and apply the theory to the story.

I understand that Poe believed that effect drove the plot, but Rue Morgue had a stronger plotline than, say, The Purloined Letter. Obiviously, the gore caused a very strong effect on the reader, but how would you approach this part of the theory? Mostly agreeable? Half and half? Not very agreeable to the theory?

He also states that Beauty is the centerpiece of poetry, but Rue Morgue obviously hinges primarily on analytical skills, intellect and ultimately, Truth. Do y'all agree?