From what I've seen of XII and XIII, and from discussions with programmer friends, the surprising number of bugs plaguing those titles seems to be the result of SNK being too cheap or too broke -- or quite possibly both -- to pay for real, hardcore, comprehensive QA.
So many of the throw-related freeze bugs in particular could have been identified and swiftly squashed just by more meticulous state checks in debug mode and the like. But as it was, KOF XII, while profitable, meant basically that SNK was treading water more than resurging, so they rushed KOF XIII through a cursory QA just like XII to get out in time for Tougeki and took it on faith that overly dumb shit wouldn't emerge in the...ridiculously explorative and meticulous competitive arcade environment?
This would be irrelevant to an eventual console release, of course, if one didn't get the sense that they were going to repeat the same mistake for console XIII and replace old bugs with new ones due once again to insufficient QA. (Witness the post-patch INTRODUCTION of the XII Raiden vs. Liz handcuffs glitch. How pathetic does your time/money invested in QA have to be to let something like landing a SUPER COMMAND THROW against a STANDING OPPONENT result in a handcuffs glitch?)
It's one thing to SAY "we're gonna take our time and do it right" for the console release. But until SNK puts what money they can muster where their mouth is, I'll believe it when I see it.