Symmetry is what separates a drawing room from a living room, and it is a decision about how the space is used rather than about taste. A room for receiving guests works best when nobody has been given the better seat - when the arrangement itself says that everyone present is equal. Asymmetric seating, with a chaise or a dominant end, always creates a best place, and in company somebody has to take it.
That is why this set has matching arms at both ends and identical runs meeting at the corner. There is no head of the table, so to speak.
The corner crest is the piece of design that holds it together. Without something at the turn, two symmetrical runs meeting at ninety degrees look like two sofas pushed together; lifting a carved crest directly over the corner declares it the centre of the composition, and both runs then read as belonging to it.
Our master Indian artisans set that crest out first and space the other two from it, so whatever length the runs end up being, the symmetry holds.