The Gentlemen Consulting Detective vs The Hardboiled Private Eye. No brains, just brawn. This will be a simple battle with no preps or investigations whatsoever. Both start at 25 yards. Speed equalized (like that's going to make a difference).
Sherlock Holmes will have his deerstalker, Webley revolver and riding crop. Philip Marlowe will have his fedora, Colt Super Match Auto and any weapon he can find (he's good at improvising).
Who wins?