Id say yamamoto all the way. His immense speed would already give him the advantage here not to mention his shikai
My bias wants me to say Blackbeard because I love One Piece, but until we see how Blackbeard can deal with superior speed I dunno. Destructive power I give to Blackbeard only because he was pretty much a small city buster and was able to instantly swallow up a town as a mere demonstration before he obtained the Gura gura no mi. Still, Yamamoto's speed may allow him to near instant kill Blackbeard with his sword alone. And it is arguable if Blackbeard could even regenerate from the flames. One thing is for sure, if Yamamoto uses that Kido that sacrifices an arm, it's all over. We know Yamamoto can destroy all of Karakura town, he is much faster than two elite captains doing shunpo ahead of time, AND he can activate those flames rather quickly. Right now I gotta go with Yama until the OP makes any rules or handicaps.
No rules. Just go for the throat killing. Both bloodlusted. I thought pitting the two strongest characters from their respective shows would be very interesting.
I can see where you're coming from, but its not much of a match conidering Yama can simply blitz BB and put a zanpakuto through his heart
@justanormalguy: I wouldn't really say Blackbeard was the strongest in One Piece. He's taken heavy beatings from a lot of characters and he even ran away from Akainu who was on his own while Blackbeard had his whole crew.
I personally have a feeling that more powerful characters have still to be unveiled and we have yet to see how strong the strongest characters in One Piece are, which may include the likes of Dragon, Doflamingo, Mihawk etc.
However in relation to this thread I think Yamamoto would destroy Blackbeard, just with speed blitz because I'm pretty sure Blackbeard's yami yami no mi absorbs fire, like it did Ace's flames.