How can this be the case when Kirstie Alley was the first to be the character? Setting aside acting ability, looks, takes on the character, whatever, Kirstie was first.
WHAT IF it had not been Kirstie Alley, but, oh, say, Rosie O'Donnell? You would still say that she'd be your choice for best Saavik merely because she'd been the first?
You logic is in question here, I think.