liberty has no pure cruiser for example - it has a siege cruiser ... and a battlecruiser, but nothing in between. - kusari has an enlarged gunboat destroyer - and i bet rheinland would love to have something as agile and small, too.
its not that easy to make just a battlecruiser for everyone. - a BC fits into liberty, cause they do not have a real cruiser.
I think the problem Not Amused is pointing on is the fact Liberty BC can take out (nearly) all cruisers in game if not piloted by someone who's first-time in cap. Meaning that noone else have equivalent oponent for it. (Well, BH BC)
I buy things I don't want to make an impression on people I don't like.