What are some similarities and differences between Jay Gatsby in The Great Gatsby and Okonkwo in Things Fall Apart?

Both Jay Gatsby from The Great Gatsby
and Okonkwo from Things Fall Apart stubbornly pursue courses of
action that lead to their deaths.  Jay Gatsby sees only Daisy's green light and commits
adultery in order to obtain her.  Quite simply, he is living in denial of the fact that
she is a married mother who will never leave her husband.  Gatsby's single-minded focus
blinds him and eventually leads to his death.  Okonwko too lives stubbornly, beating his
wives during Peace Week, killing Ikemefuna and the messenger, and shooting a clansman,
although accidentally.  Not so much a romantic dreamer like Gatsby, Okonkwo is blind to
his own pride and cruelty, one who spitefully practices male aggression instead of
patience and wisdom.

Both Gatsby and Okonkwo live in exile,
but Gatsby's exile is by choice and Okonkwo's is by decree.  Gatsby chooses to forsake
his family in favor of a playboy lifestyle.  Okonkwo, on the other hand, is forced into
exile after his accidental shooting.  Whereas Gatsby reinvents himself during the exile,
Okonwko remains the same stubborn alpha-male while living with his wives's
clan.

Both Gatsby and Okonkwo shamefully deny their
fathers.  Gatsby changes his name and moves away from his family after the war, a
socio-economic separation.  Okonkwo lives with shame that his father is an
agbala, a womanly male who refuses to work or repay his
debts.

Okonkwo is a warrior for and leader of his people,
whereas Gatsby is a solitary figure, full of mystery.  Obviously, the African tribal
culture is much different than the Western individualism, but, in general, Okonkwo takes
on more responsibility and ownership of his culture (maybe too much); Gatsby, by
contrast, actually subverts his culture's values by indulging in crime.  In other words,
Okonwko works his way to the top of his culture honestly, and his has more vested in it
(several wives, children, and obis), while Gatsby becomes successful through black
market crime (bootlegging and gambling), using his gangster connections to subvert the
law.