"Ozymandias" - focuses on the hubris of its titular character, and how his belief in the transcendence of his power, and his own might, led to his ultimate downfall.
"My Last Dutchess" - explores ideas of how pride permeates into interpersonal relationships. The Duke's oppression of his wife and her eventual demise all stemmed from his ego.
Compare: Similar = abuse of power
"Ozymandias" - focuses on how Ozymandias abused his power in order to give an appearance of might and power and in doing so, neglected his people.
"My Last Dutchess" - the Duke uses his authority over the weaker Duchess in order to control and sway her, an unjust of power that culminates in her death.
Compare: Difference
"Ozymandias" - the character meets his eventual downfall at the hands of time and nature.
"My Last Dutchess" - No relief is offered, the Duke is moving on to find a new wife.
Compare: Similar form
Both use one long large stanza
This serves to illustrate the tightness of control exerted by both the tyrants. There is minimal room for deviation or expression, rather the entire poem is condensed into one stanza.
Compare: Different form
"Ozymandias" - Irregular rhyme scheme which provides some hope for freedom and expression.
"My Last Dutchess" - uses a regular ABAB rhyme scheme, in order to further reiterate that control and regularity to the reader.
Compare: Similar enjambment
"Ozymandias" - used in order to comment on the illusion of freedom under the rule of a tyrant.
"My Last Dutchess" - used as it gives a sense of spoken word as well as making the poem seem less organized.
Compare: Similar context
Both poems use historical figures to comment on contemporarysocietal issues.