You will notice in the pics in the above thread that the three Ebony cues have a SS joint about 1/2 the size of the bottom cue which is a typical full size joint
Some not all 1/2 joint cues are built in a highly technically way that reduces the deflection of the cue alot.
There are a few full joints like this too.
I happen to know how Jerry Rauenzahn's joint is built because I asked him to build me the first one he made and explained to him how I would like it to be constructed.
Nick