Summarizing the possibilities:
I. Wank and Wanker thought up this plan to pretend Beef is dead, and tell Ray.
Unlikely. Beef would have to be in on it to give up his goggles, which may or may not have Properties.
II. Beef is just dead.
Possible. He has been preparing for this since his tiny baby limbs could form fists, but Achewood is not with its sense of the tragic. Sometimes you ought to win, and you just lose. Also something about Vlad's "Oh, man. Is so cool" seems to be mocking fannish rooting for either ray or beef. Sometimes you want someone to win very much, and they just lose.
III. Beef told Wank and Wanker to tell Ray this.
Possible, but an uncertain plan. You just know that Barry McBlog is going to be cor blimey but a little bird told me all over the internet in two seconds if you trust him with a secret.
IV. Beef faked his own death, letting nary a soul in on his intentions, assuming the identity of "Nobody Said It Could Be" Donovan Farley, who wears aviator glasses not goggles, (got to use the Clark Kent principle here, that the eyewear makes a man) and who once made a man tear his own tongue out, for he had done him wrong. Big D goes on to win the fight, and Ray has his own moment of "X == Y!?", except he is a bad programmer, so he probably uses single-equals or dollar-sign or some kettle-cooked potato chips or something.
Basically a sure thing.