If Link had his whole arsenal, he would win. If it was just a sword for each of them, then Marth would win.
*WARNING* Side effects of DoctorIrish include, but are not limited to: headache, fatigue, nausea, vomiting, abdominal pain, tachycardia, memory loss, anemia, insomnia, bloody nose, vertigo, anxiety, seizures, angina, heart attacks, stroke, anal leakage, and in some cases, head explosions. Ask your doctor if DoctorIrish is right for you.