This is TPM Obi-Wan right? Well I don't think Obi could have done it without Qui-Gon Jinn so I would most likley go with Maul on this one. That depends though. If Maul saw he was just going to face an apprentice alone he would get cocky and underestimate him. But this time, Obi has nothing to fight for but survival, at the end of TPM he wanted to avenge Qui-Gon and that made him alot better than he was before, he smacked Mauls lightsaber and they were having a tough fight. So I have to go with Maul because Obi would never get that kind of rage.