No. Sadly they are different. CSS has the same delay for all instruments; one delay for shorts, and different delays for slow, medium, and fast, but at least this is the same for all instruments in the String family.
On the other hand; CSB has different delays for all instruments. This was a conscious choice from the team, which I don't understand at all. I see what they mean by different instruments having different legato lengths, trombones take longer to go from note to note than trumpets, but why not make the legato length a common denominator of the highest delay. I don't have a much of a problem with legato delay as some others here seem to have, but that's only if it consistent across the board so that I can move ALL notes a specific amount and have them in perfect time with each other. With CSB you would have to move the notes a different amount compared to the Strings, and even other brass instruments. This seems like a odd choice considering the crazy consistency in the Cinematic Studio series.
But almost exactly a year ago Alex said, if i remember correctly, that they were working on an update for CSS to move them over to the new legato engine. Not sure what that entails, but I'm hoping for a more consistent delay across the different families, and instruments.