No, I don't think so. Read my last post I was prolly typing at the same time as you and you may not have read it. It doesnt mean you can shoot the 6 in legally and win... that would technically be giving "the last 4"... wild 6 just means you can jump out of sequence anytime in the first 5 balls to shoot the 6 and then jump back into rotation... hence the higher wild is the better since hypothetically you could wait later in the sequence to use your wild ball and have less balls remaining to pocket.
Wild ball is as I expalined above and in the last post, "last 2" is different from wild balls. wild balls can be pocketed at any time without penalty or loss of shot but do not have anything to do with winning the game.