"Captain Sisko has calm, self-confident authority, to a degree that makes Picard look like Richard Simmons."
-Blogfather Harvey of BadExample
I'm currently in Season 2 and I have to say that I disagree with this sentiment. Whereas Picard shows wisdom in his actions, I would say that he is no less self-confident, and Picard allowed his passion to show, without letting it get to the degree of losing sight of reason.
So far, I find that Sisko is short-tempered, he also has wisdom, but he's largely hypocritical. On the very first episode, we see that his wife died due to the actions of Locutus of Borg (Captain Picard for those unaware). We later see his barely controlled anger at Picard for the incident, despite knowing that Picard was under Borg control and not able to do anything to prevent attacking the Federation.
In another episode, a group attempts to capture Jadzia Dax for the crimes of Curzon Dax. Sisko prevents them from taking her and the case goes to trial, with him alleging that Curzon Dax and Jadzia Dax are two separate individuals. (This later becomes moot as we find out Curzon was innocent of the charges, but this is beside the point.)
In Sisko's mind, Jadzia could not have been brought up on charges because she isn't Curzon, however, he would judge Captain Picard for the actions of Locutus of Borg, despite the two being completely different. This strikes me hypocritical, and for that I find him to be an inferior Captain.
With that said, I am nearing the end of season 2 of Deep Space Nine, and finding it largely enjoyable. I also like Captain Sisko despite his flaws.