Originally posted by Bentley
Blackbeard is hardly a low showing for WB, that guy rivaled Shanks in single combat and survived Ace's Entei along with pretty much everything they've thrown at him the entire series. Luffy with second gear didn't do any lasting damage and was countered easily, the guy is beyond Blueno's tekkai by a good margin.
In terms of dealing with resistance, many awakened ones are very hard to cut with the swords wielded by the superhumanly strong claymore (said swords also being unbreakable so they can put a lot of force into them).
Even next to those awakened, however, Isley is far more durable, being both huge and heavily armored. And Priscilla destroyed half his body in an instant. Dauf is similarly super-tough, and similarly provided no resistance to her attacks.
Blueno level Tekkai would be entirely useless against her without a doubt. I don't even know how useful Rob Lucci level Tekkai would be.
Priscilla's a good matchup because she is so offensive oriented- for defense, she doesn't try to stop them (though her body, being a awakened one's, is still pretty darn tough, it's just not her focus), she just doesn't care due to regen, so more attack power tends to simply mean more blow-through that doesn't accomplish much. Offensively, on the other hand, her strength and odd growth attacks like the spikes are very high-level. So she might beat someone who's objectively much directly stronger, by not caring about the attacks she gets while her own attacks inflict real injury in return.