I got this time with Bret Hart with a principal damage output combination of X and A, finishing with a back+back+A kick or a combo depending on healt left and how deffensive my opponent was, i know that launching the opponent out of the ring while K.O.ing him is an instawin, and a Perfect rount takes about 2-3secs to go away, but arranging a launching out+K.O. in my case, ends up taking more time than just K.O.+perfect, got lucky getting some pushing/pounches to take a bit of hp so i dont get the perfect and save up some seconds, the last match is the hardest to arrange for quick K.O.s but overall i KNOW that this can be faster with some luck and good decitions.