Why Shock Troopers never had an AES release?!?

There is someone who can actually tell me why Shock Troopers never had an official AES release???
I mean it's one of the best Neo game:
graphics are cool, soundtrack rocks, gameplay is various and addictive and it even have a lot of longevity, considering the 3 completely different routes.
Really can't understand why SNK never released a top game like that... <IMG SRC="smilies/ohno.gif" border="0">
I heard there's a Saturn port... is it true?

This is just a stab at it, but I think that because they foolishly released the game RIGHT before Metal Slug 2, they fucked themselves over. MS2 totally dominated it. Maybe if they had waited... <IMG SRC="smilies/ohno.gif" border="0">