Maetel Legend arbitrarily decided that Maetel and Emeraldas are sisters, which was baffling and unnecessary (or am I missing something?). It also got rid of any shred of subtlety present in Leiji Matsumoto's earlier library, replacing it with "Now that I am a robot, I am PURE EVIL!"
The art is slick, yet maintains most of its 'old school' charm- though I'll posit that the ladies were foxier in th 70s.
I don't recommend this for newcomers to the franchise, but if you're already a fan of the Leijiverse this is a decent watch (and short!). There's some effective body horror, and origin stories are always interesting (even if only to see how much they contradict everything else :P)