Well, I can imagine that collusion would be all but impossible here, considering you have a little green top using Ataru on crack, a pissed off black man, and the Dracula all being meshed onto a single Jedi. I can see Luke possibly taking one of them with his instakill here, and then out-maneuvering the other stwo, who'll still have troubling taking him simultaneously, what with the style differences and all. So, I can see Luke taking this.
Luke would take this one. Mace, Yoda, and Dooku's forms all require alot of space. Vappad, Ataru, forgot the other one, involve moving around alot and going nuts with your light sabre, although Dooku's is a tad more precise. So the other two Jedi have to stand back while the thrid one fights Luke and gets WTFpwnd. This will go on for the other to until Luke finnaly finishes the last guy.