I'll just quote myself from the last time. 
One thing that Jadzia and Ezri both did was Worf.

Ezri wasn't science officer. She wasn't the pilot of the Defiant. She didn't use a bat'leth, or play tongo, or display excessive snark, or hold particular devotion to Klingon stuff...or wrestle Galeo-Manada style. ...As far as we know, at least.
One thing that Jadzia and Ezri both did was Worf.
