For me the 1.4.1 version of FBAlpha plays most NeoGeo games extremely well, although that's on a N3DS with CFW. Still, it's worth a shot.
Thanks for the response. I'd love to try it out -- nothing to lose. Would you be able to give any guidance to where I can still get that version? The 'archive' directory on the RA site is blank. If it's on a place that violates ToS, then don't bother.