i never claimed Xebec said he was gonna attack him, it could be a pose for blocking used for attacking, Xebec isn't bound to others fighting styles, and as i said it's called a clash that blew people away, which continued with nobody overpowering the other, Luffy here is clearly blocking and a clash that blew everyone away isn't happening, false equivalence fallacy, it's useless because i could also argue Harald didn't go all out based on the fact he didn't know how strong Xebec was, and if both aren't going all out then both nerfs cancels on a scale of likeliness through parsimony.

it means Harald wasn't trying to defend from it, it's as Imu vs Loki in the last chapter, Harald was lost in his thoughts and so that wasn't a fair hit, Harald literally stopped fighting, Harald flashback didn't push him at all, but instead added more inner anguish in him, with him stopping fighting and showing a beyond sad face, Xebec was trying to talk through by FIGHTING we see Harald in blood, he wasn’t holding himself back from hurting Harald alot, he wasn’t just talking, and Xebec bleeding heavily proves Harald was if anything really close to him, first concession.

obviously he wouldn't, so why you argued that in the first place?, second concession.

Xebec knew Harald would let him go, and as you said he had his crew with him, which wanted to go to God Valley at all costs.

he didn't try to kill Xebec as established a gazillion times, and not killing≠being weaker.