How is Poe similar to and different from Wordsworth?

The two authors certainly have their artistic differences, so let's start there.
Edgar Allan Poe's tone in his works is almost always dark, and he almost always touches on death in some way. In "The Cask of Amontillado," the narrator witnesses the death of an old childhood friend at the hands of his sister, who has possibly been buried alive—or returned from the dead. In "The Raven," the narrator longs for the presence of his deceased Lenore. In "Annabel Lee," the speaker lies at the side of his beloved's grave since he can no longer be with her. In "The Tell-Tale Heart," Poe creates an unreliable narrator who conveys the details of why he murdered an old man. The stories and poems are chilling, often reflecting a side of humanity that is unstable or dangerous.
In contrast, Wordsworth mostly focuses on things of beauty and lasting significance. In "I Wandered Lonely as a Cloud," the speaker conveys how a simple field of daffodils brightens his mood on challenging days. In "Composed Upon Westminster Bridge," Wordsworth praises the tranquil beauty of London in the early morning. In "My Heart Leaps up when I Behold," Wordsworth conveys the delight that a rainbow brings him. Although he does touch on other emotions in his poetry, overall the feelings are real and sincere, unlike the shocking sense of horror that Poe often elicits.
Both men contributed to the Romantic movement. Poe focused on the ideas of the supernatural, love, evil, and loss; Wordsworth is considered the father of the movement and chose nature, childhood, memory, and the power of the mind in his content. However, both reflect a movement away from the rational thinking of the Age of Enlightenment. Both men sought, instead, to explore the imaginative powers of the human mind and the emotional responses that varying topics could elicit.