AT hybrids do not develop teardrop.
the picture you posted is a normal AT.
here's a hybrid AT x powder black
most people think that a hybrid will show equal amounts of traits from both parents. 50%-50%. but if you study genetics, that's not always the case.
in the case of the achilles tang hybrid, the achilels tang only lends the orange pigment on it's tail to the offspring, and zero of the orange teardrop genes.
but i prefer the AT hybrid over the normal AT.
the tail is very special.