http://www.killermovies.com/forums/showthread.php?s=&threadid=469655
Anyway, I still say Tekken.
Good to see someone's giving Alpha-152 credit.
For the record, nothing Kasumi has done fazed Alpha in the least. Most of Kasumi's attacks were done by her sword and Alpha was blocking every one of her attacks with her limbs.
A good quality video of the battle between them: DOA4 Ending
More of Alpha's abilities starting from 3:35. Ayane DOA4 Story Mode
I only voted DOA because I thought we were counting the Ninja Gaiden universe. If not, then Tekken could win. The biggest problem in DOA is Bankotsu and Raidou w/ prep to some degree. Alpha-152 is pretty dangerous herself, but compared to the likes of Devil, Devil Jin, Jinpaichi, and now Azazel it begins to slant towards Tekkens favor.