To be honest, they are really great to me, at least they have different body shapes (wich is somethin' equestria girl failed to do...BOOOOOOH), size and show well the differences between them. And knowing what anime figures usually looks like, they aren't sexualised that much - I'm an avid anime/manga figures collector, and believe me, thoses depicting females are usually really hot.
So to me, Kotobukiya have made a good job translating the ponies, they are cute, only a bit sexy and really close to their character.