Batman wins all these rounds. He is from a different time and has mastered hundreds of martial arts and has much better equipment vs Ezio......I only played AC2 and AC2: Discovery so I don't know what kind of training he has but I don't think its anything in comparison, as he was just gifted. Even the Robins would dance around them. They all have better feats then Ezio. The Batfamily generally takes on those that are metahumans while those in AC take on swordfighters with the rarity of magical assistance(from the Apple of Eden, the staff) The battle will go like this:
Replace "Bruce Wayne" with "Batman", replace "200 years ago" with "800 years ago" and picture the Talon with Ezio and a Bruce in his Batman Costume and there's your fight! XD
Hopefully you realize I was exaggerating a bit.