I don't understand the piano reference.
is it that the thick strings are longer and the thin strings are shorter?
Yes. A nice long scale is helpful for a tight and clear low B string. At the sane time, you may not want or need the same scale length for the other strings. The other strings have less material/thickness and may sound inconsistent if everything is the same length. So if you adjust the scale length for each string with B as the longest and G as the shortest with all the others incrementally "in between" you should be able to get them sounding nice and even. That's the idea anyway.
People say they are more comfortable to play on the left hand too, but I can't speak to that.
