Yeah I got my three today LadyCons today and I gotta admit, I don't understand Japanese but considering in one the Autobot gals are in the background dressed as bunny girls, schoolgirls and the like I'm the same as you - not sure to find it just silly fun or a bit too sexist. Are the ones that come with the three Autobot ones similar?
I do like the way these characters have been drawn on the box art and the front of the instruction manuals though - if they made posters out of them I'd definetly buy them (especially Black Arachnias)