No one so far has addressed skillsets based on which weapon is being used. There's a lot of difference between an attack made with a katana versus an attack with a rapier. Yes, they can both kill you, but a relatively unskilled fencer has a significantly higher chance of doing some damage to his skilled opponent than does a relatively unskilled samurai. A rapier may leave a few holes that can bleed, but even a minor slice with a katana will allow bleeding-out within just a few minutes.
I agree completely with Gendzwil that it's most likely that both fighters will be injured or killed.
Ken Goldstein
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Judo Kodansha/MJER Iaido Kodansha/Jodo Oku-iri
Fencing Master/NRA Instructor
"A positive attitude may not solve all your problems, but it'll annoy enough people to be worth the effort."