Here are a couple of old articles that I came across that people familiar with Xena the Warrior Princess may find interesting - from a Xena fansite, a comparison between Xena and Kira Nerys.
Dark Warrior Pasts: Kira and Xena
The Once and Future Warrior: Parallels between Colonel Kira Nerys and Xena, the Warrior Princess
Some of those they list are completely superfluous and silly (both actresses were pregnant during the show? Add Daphne from Frasier to the list!
), while others make a more sense.
Character comparisons are particularly fun - some really work (Ares/Dukat? Autolycus/Quark? Marcus/Bareil? or even Callisto/Silaran Prin?), some make me grin widely (Gabrielle/Odo?)... and then some just make me laugh out loud:

Dark Warrior Pasts: Kira and Xena
The Once and Future Warrior: Parallels between Colonel Kira Nerys and Xena, the Warrior Princess
Some of those they list are completely superfluous and silly (both actresses were pregnant during the show? Add Daphne from Frasier to the list!

Character comparisons are particularly fun - some really work (Ares/Dukat? Autolycus/Quark? Marcus/Bareil? or even Callisto/Silaran Prin?), some make me grin widely (Gabrielle/Odo?)... and then some just make me laugh out loud:
Xena: Aphrodite, underdressed blonde who specializes in free love.
Kira: Kai Winn, overdressed blonde who specializes in self-love.
