The idea of the head shape was to mimic a traditional Jpen blade, but in shakehand grip. It also provides a lower balance because it concentrates more mass in the bottom. I'm not comment on the sweetspot because I haven't made an objective comparison between shapes. The blades do have a nice sweetspot, compared to others with this composition, but that's more related to the construction rather than the shape.Interesting head shape. How does it compare to a "standard" head shape? Supposedly bigger sweet spot?