So I bought it. I have only played Bikini Karate Babes so far. It is really silly. My favorite character for comedic value is Thalia. Her special moves include tickling her opponent and shooting out Red, White, & Blue American stars and streamers from her ass.
Though I also like Aphrodite's breast laser.
The game is not a good fighting game, not that that should be a big surprise. I won most matches by button mashing, and the later difficult battles seem to have more to do with luck than skill, though improving your timing can help. It's mostly a game that is good for a laugh.
I watched a little of their documentary for Warriors of Elysia. It's probably the funniest of all of this because they are so serious about it. They made Bikini Karate Babes as a parody of over-sexed fighting games (and probably as an excuse to meet models), but that game was a cult success and now they are taking Warriors of Elysia with more seriousness than it appears to deserve.
