So /a/ who wins?
Location is an empty bar out in the middle of a desert
Who the fuck cares
Clearly you because you posted
Well yeah? PROVE IT, FAGGOT
Lupin, because Spike is dead.
The one who's still alive
Assuming Spike is still alive, and they both engage in a fist fight, Spike obviously wins because he's supposedly Bruce Lee from the future.
They would fight to a draw, spend the night drinking themselves silly and swapping stories, and then never see each other again.
You've got Lupin, a guy that is third in a line of master criminals that is wanted the world over and has never been successfully captured outside of when it's his plan to be, and you've got a dead guy. The dead guy already lost.