I went with Jessica, for both aspects... at this stage of their careers.
Both ''looks'' wise and catfight-wise, ''early'' Cybill never ''did it'' for me... not to mention that she didn't even look anything like what she did, say, when she was doing ''Moonlighting''and there on in..
... but, have the same two going at each other just a few years later, and I'd switch my votes, in a flash.
But, back to the here and now, so to speak, here, or rather ""now'' (as per the pictures), I'd see Jessica just plain overpowering Cybill, with the likes of strongly applied head-locks and such, finishing her up with a body scissor.
P.S.: good call on the match-up, again (as with many of your previous ones, I'd often ''considered'' each of these two, bet never against one another... until now !)